英语翻译An electronic system for the conversion of a liquid level into voltage isshown.This allows the student to carry out basic hydrodynamic experimentswhere fast liquid level changes occur.The use of this system is illustratedwith the classic _百度作业帮
拍照搜题，秒出答案
英语翻译An electronic system for the conversion of a liquid level into voltage isshown.This allows the student to carry out basic hydrodynamic experimentswhere fast liquid level changes occur.The use of this system is illustratedwith the classic
英语翻译An electronic system for the conversion of a liquid level into voltage isshown.This allows the student to carry out basic hydrodynamic experimentswhere fast liquid level changes occur.The use of this system is illustratedwith the classic draining tank experiment.还可以翻译得更流畅一点的答案吗？
一个用来转换液位到电压的电子系统已经出现.这使得学生能够进行基本的流体力学实验如快速液位发生变化.这一系统的作用是用来说明经典的排水坦克实验
一个把液位转换为电压的电子系统已经出现。 这使得学生能够进行基本的流体实验，如液位发生了快速变化。 这一系统用图示典型水柜泄放的方法说明。汇聚2000万达人的兴趣社区下载即送20张免费照片冲印
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{list wl as x}{/list}正贤英语高二阅读理解强化训练专题科技类
Would you carry around an electronic ID, not in your pocket, but in
your body? Does this idea scare you or make you feel safe?
　　The first computer ID chip(芯片) that could be planted under a
person’s skin might be marketed very soon.
　　Developed by Applied Digital, an American technology company
based in Florida, the device(发明物) could meet the need for public
security(安全) after the September 11 attacks.
　　For airports, nuclear power plants(核电站) and other high security
facilities(设备), the immediate effects are obvious.
　　The technology could help put an end to false ID cards, because
it would be difficult to remove and copy a tiny computer chip. The
chip is as small as a grain of rice.
　　The technology would also allow satellites to track(追踪) a
person’s every movement and store medical records.
　　These uses are already attracting interest for tasks like
fighting against kidnappings(绑架), or helping with medical
operations.
　　But some people are afraid of the loss of privacy(隐私).
“You always have to think about what the device could be used for
tomorrow,” said Lee Tien, a senior privacy lawyer in the United
　　“At first a device is used for applications we all agree are
good, but then it slowly starts being& used for
more than it was intended,” he said.
　　However, Applied Digital says it will soon apply for(申请)
government permission for the device. It says that the first people
to use the chip will be volunteers.
　　Getting the implant(需移植的芯片) would go something like this:
　　A person or company buys the chip from Applied Digital for about
US $ 200. And the company encodes(编码) it with the desired
information.
　　The customer then takes the chip to their doctor, who can plant
it with a large needle.
　　The device has no power supply, rather it is activated(使活动, 使运行)
by a scanner(扫描仪)& running across the skin above
it. Without a scanner, the chip cannot be read.
　　Even with the privacy concern, some are already eager to use the
Jell Jacobs from Florida hopes to become the first buyer of the
chip to store his medical records. Suffering from a serious
illness, he wants to make sure doctors can help him quickly.
　　Eight Latin American companies have also shown interests in the
device. It could help to find any tourists who are kidnapped.
1. The best title for the passage is _______.
A. Why Is the New ID Necessary
B. Getting a New Kind of ID Under Your Skin
C. An Advertisement for Chips
D. Where to Buy the Chip
2. Which of the following is true according to the text?
A. In some airports and factories such device is already being
B. The information on the chip can be read when it has its power
C. The technology could help put an end to false ID cards.
D. The first computer ID chip has already come into the
3. What is the advantage with the electronic ID according to the
A. It can store people’s medical records and help with medical
operations.
B. With this people will have no fear of losing privacy.
C. It’s cheap to buy and easy to get.
D. It is developed by Applied Digital in Florida.
4. What can we learn about Jeff Jacobs?
　　A. He’s a worker in Applied Digital, a company in Florida.
　　B. He’s a doctor who helps plant tile chips on people.
　　C. He fears if he uses the chip he will lose privacy.
　　D. He’s suffering from a serious illness and wants to buy the
【答案解析】本文介绍了新的个人身份证—电子身份证的特点、功能及人们对此的态度。
1. B。主旨题。 根据 Would you carry around an electronic ID, not in your
pocket, but in your body?…The first computer ID chip that could be
planted under a person’s skin might be marketed very soon
及以后的内容可知本文讲述的是安装在皮肤上的电子身份证与传统身份证比较所显示出来的新特点，故选 B。
2. C。细节题。 阅读全文可知 A、B、D 与原文不相符，再根据 The technology could help put an
end to false ID cards 可知 C 为正确答案。
3. A。细节题。根据第 7 段 These uses are already attracting interest for
tasks like fighting against kidnappings, or helping with medical
operations 及倒数第2段 …hopes to become the first buyer of the chip to
store his medical records 可知这种电子身份证有助于医学手术及储存医学纪录的作用，故选 A。
4. D。推断题。根据 Suffering from a serious illness, he wants to make sure
doctors can help him quickly 及 Jell Jacobs from Florida hopes to
becomes the first buyer of the chip… 可知答案 D 说是这两句话的总结。
Over the past 10 years, technologies that have combined computers
with telephones have developed. Technologies such as PC fax
programs and LAN fax servers(局域网传真服务器) have been used to improve
fax communications. The latest computer-based technologies are new
mechanisms(机制) which use IP(Internet Protocol, 因特网协议) to send
faxes, that is, IP fax.
Traditional fax has a fairly simple usage model. First, the user
inserts a document into the fax machine, enters the destination fax
number and presses the start button on the machine. The sending
machine dials the receiving fax machine. If it connects, the
sending machine scans the documents and sends it over the public
switched telephone network(PSTN, 公共电话交换网) to the receiving machine.
At the same time, the receiving machine receives the document and
then prints it.
In IP fax system there are two basic transmission modes:
store-and-forward mode and real-time mode. Store-and-forward mode
has been widely used. In this mode, the entire document is sent to
a network-based server that stores it and then sends it to the
destination. Real-time IP faxing is similar to traditional fax.
Real-time mode allows two fax machines to directly communicate
through a proper standard.
IP fax enables a fax document to be sent from one person to
another. A fax machine or a computer can be used to send or receive
the fax. IP fax also allows e-mail to be used to receive faxes.
This would enable users to receive faxes anywhere, anytime with an
internet fax address.
1. The passage deals mainly with _______.
fax&&&&&&&B.
C. information
technology&&&D.
new machines
2. In traditional fax, _______ can be used.
computers&&&&&B.
LAN fax servers
e-mail&&&&&&&D.
only fax machines
3. IP fax can use all of the following to send and receive a fax
except _______.
machine&&&&&B.
a receiving machine
computer&&&&&&D.
4. In real-time IP fax mode _______.
A. two fax machines communicate directly
B. a network-based server is used
C. users can receive faxes anywhere
D. the PSTN has to be used
5. In paragraph 2, the word “inserts” can be placed by
A. prints&&B.
presses&&C.
puts&&D. uses
【答案解析】本文介绍了传统的传真和科技的发展带来了现代传真的新特点。
1. B。主旨题。根据 The latest computer-based technologies are new
mechanisms which use IP to send faxes, that is, IP fax 以及第 3 段中的 In
IP fax system there are two basic transmission modes…和第 4 段中的 IP
fax enables a fax documents to be sent from one person to another
及后述内容都是展开讲述 IP fax 的有关内容，由此可见 B 为正确答案。
2. D。细节题。根据第 2 段 Traditional fax has a fairly simple usage model.
First, the user inserts a document into the fax machine,…The
sending machine dials the receiving fax
machine可知在传统的传真中，仅仅使用普通的传真机，而 A、B、C 是在现代的传真时才使用，故选 D。
3. B。细节题。 根据 At the same time, the receiving machine receives the
document and then prints it 可知 a receiving machine 仅仅用来接收的，据此选答案
4. A。细节题。根据 Real-time mode allows two fax machines to directly
communicate through some standard 可知在真实模式下，两台传真机可以直接交流，据此选 A。
5. C。词义猜测题。根据 First, the user inserts a document into the fax
machine 可知使用者不是把文件打印(A)、挤压(B)、使用(D)而是放入到传真机里，由此选答案 C。
Flying over a desert area in an airplane, two scientists looked
down with trained eyes at trees and bushes. After an hour’s flight
one of the scientists wrote in his book, “Look here for probable
metal.” Scientists in another airplane, flying over a mountain
area, sent a message to other scientists on the ground, “Gold
possible.” Walking across hilly ground, four scientists reported,
“This ground should be searched for metal.” From an airplane over a
hilly wasteland a scientist sent back by radio one word:
“Uranium.”
None of the scientists had X-ray eyes: they had no magic power of
looking down below the earth’s surface. They were merely putting to
use one of the newest methods of locating minerals in the
ground…trees and plants as signs that certain minerals may lie
beneath the ground on which the trees and plants are growing.
This newest method of searching for minerals is based on the fact
that minerals deep in the earth may affect the kind of bushes and
trees that grow in the surface.
At Watson Bar Greek, a brook(小溪) six thousand feet high in the
mountains of British Columbia, Canada, a mineral search group
gathered bags of tree seeds. Boxes were filled with small branches
from the trees. Roots were dug and put into boxes. Each bag and box
was carefully marked. In a scientific laboratory the parts of the
forest trees were burned to ashes and tested. Each small part was
examined to learn whether there were minerals in it.
Study of the roots, branches, and seeds showed no silver. But there
were small amounts of gold in the roots and a little less gold in
the branches and seeds. The seeds growing nearest to the tree
trunks had more gold than those growing on the ends of the
1. Scientists were flying over a desert or a hilly wasteland or a
mountain area in order to search for _______ in the ground.
gold&&&&&&&&
silver&&&&&&&&&&
metals&&&&&&&&&&&
D. minerals
2. The study of trees, branches and roots shows that _______.
A. there were larger amounts of gold in the branches than in the
B. there were smaller amounts of gold in the roots than in the
C. there were less amounts of gold in the seeds growing on the ends
of branches than seeds growing nearest to the tree trunks
D. there was more gold in the branches than in the roots
3. Which is the best title suggested below?
A. Scientists Searching for Metals with Special Power
B. New Methods of Searching for Minerals
C. Gold Could Be Found by Trees and Plants
D. A New Method of Searching for Minerals — Using Trees and
　　4. Which of the following is NOT mentioned as part of a tree that
can help find minerals?
　　A. Leaves.&&
&& B. Roots.
& C. Branches.
5. The scientists were searching for minerals by using
A. X-ray && B. magic
power&&& C. a
instrument&&& D.
trained eyes
【答案与解释】探测矿产资源历来是苦差事。科学家们通过研究，独劈蹊径，采用一种新的快捷有效的方法—根据地面植物情况来判定地下的矿产资源。
1. D。语义理解题。根据文章第1段的内容以及一般常识可推知答案。
2. C。细节题。从文中最后一句The seeds growing nearest to the tree trunks had
more gold than those growing on the ends of the branches 可知。
3. D。主旨题。通读全文可知答案为D。
4. A。细节题。从最后一段可知通过研究 roots, branches 和 seeds 可判定地下是否有矿产，而 leaves
在文章却没有提到。
5. D。细节题。从文章第1段的第 1 句和第 2 段可找到答案。
New findings suggest that brainy card games such as contract bridge
may temporarily(临时地) raise production of a key blood cell including
in fighting off illness. After 90 minutes of play, bridge players
had increased levels of immune(免疫) cells, according to the research
reported last week.
A researcher, Diamond, studied bridge players from a women’s bridge
club. She chose bridge players because the game includes skills
stimulating(刺激) a part of the brain called the dorsolateral cortex.
Earlier animal research suggests that this part of the brain may
play a role in the immune system.
The findings are based on blood samples drawn from 12 women
players. Their blood samples showed a rise in levels of white blood
cells called T cells after they played bridge for 90 minutes. T
cells are produced by the thymus gland(胸腺) and used by the immune
system against diseases.
The T cell count jumped significantly in eight of the bridge
players, and slightly in the other four. The findings contribute to
the field of neuroimmunology(神经免疫学), whose name reflects the fact
that the nervous system and the immune system are not considered
separate and isolated(独立的) systems. What isn’t clear is whether the
help to the immune system from an activity like contract bridge is
lasting or temporary. It is also not clear whether the increase in
T cells could finally be targeted against special illnesses.
1. Playing bridge can help one to fight off diseases because it can
A. raise production of a key blood cell &B. make
people joyful
C. aid digestion&
make break away from the bad habits
2. Diamond chose to study bridge players for the research because
A. the players are good friends of hers
B. she loves playing bridge
C. this game stimulates a part of the brain that has something to
do with immune system
D. she is a clever manager, who operates her bridge club well
3. A T cell is _______ cell.
brain&&&&&B.
a white blood &&
C. a red blood &&
&&D. a kind of dangerous
4. Which of the following is true according to this article?
A. The immune system and the brain system used to be considered
separate and isolated systems.
B. The help to the immune system that is brought about by playing
bridge can last for a long time.
C. Cortex is a kind of blood cell.
D. The new findings are impossible.
【答案与解释】Diamond
通过对打桥牌的12名女士的血液抽样调查研究，发现神经系统与免疫系统不是分别独立的。人们从事智力游戏时，白细胞大量增加，对免疫系统有促进作用。
1. A。主旨题。从文章的第 1 句话中可知答案。
2. C。细节题。从第 2 段第 2 句话中可知答案。
3. B。细节题。从第 3 段第 2 句话中可知答案。
4. A。判断题。从第 4 段第 2 句中可找到正确答案。
Every living cell(细胞) contains genes(基因). They are too small to be
seen under a microscope, but they are vitally important. Each set
of genes in the body contains all the instructions needed to make a
human being. Some genes determine hair color. Some determine the
shape of a nose. Some genes help determine your height and even
your weight.
Genes are made of a chemical called DNA — the letters stand for
deoxyribonucleic acid. In the early 1950’s two scientists, Francis
Crick and James Watson, figured out how the parts of DNA fit
together. Once scientists understood this structure, it became
possible to take pieces of DNA apart and put them together in new
ways. New kinds of genes could be made in this manner.
Scientists have studied the genes of many plants and animals. They
have worked out which genes affect the color of a tomato and the
thickness of its skin. Working out which genes determine which
features is called genetic mapping, scientists have begun the Human
Genome Project, an ambitious effort to map all the genes in the
human body.
Some genes may be defective(有缺陷的). For example, something might be
wrong with the gene that makes blood clot(凝聚). An individual born
with this defective gene could suffer serious hemorrhages(出血) or
even bleed to death because his or her blood fails to clot.
Scientists are trying to treat the defective genes, and have made
great achievements. If scientists could know a child has any
defective genes beforehand, they might even discover how to treat
these genes before the child is born.
1. What was the achievement of francis Crick and James
A. They discovered why people have different hair colors.
B. They learned that some people bleed for long periods of
C. They looked at human cells under the microscope.
D. They worked out the structure of DNA.
2. What is the main idea of this passage?
A. Defective genes can never be repaired.
B. Genes are too small to be seen through a microscope.
C. Genes help scientists understand how living things develop their
characteristics.
D. The Human Genome Project may explain the role of every gene in
3. Which of the following statements is a fact?
A. Genes help determine your height and weight.
B. Genetic engineering is the most important scientific discovery
of the last 25 years.
C. It is dangerous to make changes in genes.
D. Supermarkets should not sell genetically engineered food.
【答案与解析】 基因是由叫做DNA的化学物质构成的。科学家们已经开始绘制人体基因图了。
1. D。细节题。命题依据是第 2 段第 2 句话In the early 1950’s two scientists,
Francis Crick and James Watson, figured out how the parts of DNA
fit together。
2. C。主旨题。从文章内容可知，不同的基因有不同的功能。所以，本文主旨应该是C项。
3. A。判断题。只有A项内容文章涉及了，B、C、D三项内容文章没有体现。
Wind is the great maker of waves. There are exceptions, such as the
tidal(潮汐的) waves sometimes produced by earthquakes under the sea.
But the waves most of us know are produced by winds blowing over
Now before constructing an imaginary life history of a typical
wave, we need to know certain physical things about it. A wave has
height, from trough (low point) to crest (high Point). It has
length — the distance from this crest to that of the following
wave. The period of the wave means the time it takes for succeeding
crests to pass a fixed point. None of these things stays the same —
for all depend upon the wind, upon the depth of the water and many
other matters.
The water that makes up a wave does not advance with it across the
sea. Each drop of water turns around in a little circle with the
passing of the wave, but returns very nearly to its original
position. And it is fortunate that this is so. For if the huge
masses of water that make up a wave actually moved across the sea,
sailing would be impossible.
If we want to find the speed of a wave, we may use the following
Speed = wavelength & frequency
Here, wavelength is the distance between two high points (crests),
frequency means the number of cycles per second.
1. What causes waves?
A. Earthquakes and nothing else.&B. Only
C. Wind causes most waves.&&D.
Wind causes some waves.
2. Which of the following is true according to the passage?
A. The water of a wave moves away across the sea.
B. The water of a wave remains almost at the same place.
C. The water of a wave goes with the passing of the wave.
D. The length of a wave means the distance from the top of a wave
to the bottom.
3. The speed of Wave 1 is 100 cm / s, frequency 10. The frequency
of Wave 2 is 300, while its speed is twice that of Wave 1. Which of
the following is right?
A. The wavelengths of the two are equal.
B. The wavelength of Wave 1 is 10 times longer than that of Wave
C. The wavelength of Wave 2 is longer than that of Wave 1.
D. The wavelength of Wave 1 is longer than that of Wave 2.
【答案解析】本文是说明文，讲述了海浪的有关知识。
1. C。细节题。根据But the waves most of us know are produced by winds
blowing over the sea.可推知此题答案为C。
2. B。细节题。根据The water that makes up a wave does not advance with it
across the sea.可知水并不会随海浪一起运动。
3. D。推断题。根据Speed = wavelength & frequency计算公式，Wavelength=
speed&frequency，所以波浪1的波长为10 cm，波浪2的波长为0.666 cm，故D正确。
The World’s Largest Insect
This giant insect can be used as a toy.
A child ties one end of a string to a stick and the other end
around the “neck” of an insect. Holding the stick, the child lets
the insect go. With a loud whirring sound, the insect takes off,
pulling the string in a large curve over the child’s head. The
child laughs as the stick jumps around. The child is African, and
the toy is the African Goliath beetle, the largest insect in the
The Goliath is a true insect because it has six legs and a body
that is divided into three parts. Like all beetles, it has two
pairs of wings. The front pair are thick and stiff and protect the
back pair, which are soft. It is these soft back wings that make
the beetle fly forward. They also cause the loud whirring sound the
beetle makes when it flies. To steer, the beetle twists and turns
its legs the same way you steer a bike by turning its front
African children often use the Goliath beetle as a toy. Although it
is over 15 centimeters long, it is quite harmless.
1. The African Goliath beetle is _______.&
A. the world’s largest insect
B. a toy used in many parts of the world
C. the only insect found in Africa
D. the world’s smallest insect
2. What made the whirring sound that the child heard?
A. The curved string.
The beetle’s soft wings.
C. The beetle’s six legs.
The beetle’s body.
3. We know the Goliath beetle is a true insect because it
A. makes a whirring sound when it flies &B. has
both soft and hard wings
C. has six legs and a body with three parts &D.
4. When flying, the Goliath steers
by_______.&
A. turning its soft back wings
B. twisting and turning its hard front wings
C. twisting and turning its legs
D. twisting and turning its whole body
5. What made the stick jump in the child’s hand?
A. The stick jumped because the child laughed.
B. The beetle pulled on the string when it flew.
C. The child bounced the stick to make the beetle fly.
D. The child made the stick jump.
【答案与解析】本文介绍了世界上最大的昆虫 the Goliath beetle。
1. A。细节题。根据文章第2段最后一句 …the African Goliath beetle, the largest
insect in the world可推知此题答案为 A。
2. B。细节题。根据文章第3段中It is these soft back wings that make the beetle
fly forward. They also cause the loud whirring sound the beetle
makes when it flies可推知此题答案为 B。
3. C。细节题。根据文章第3段第1句 …because it has six legs and a body that is
divided into three parts 可推知此题答案为 C。
4. C。细节题。根据文章第3段最后一句 To steer, the beetle twists and turns its legs
the same way you steer a bike by turning its front wheel
可推知此题答案为C。
5. B。细节题。根据文章第2段第3句 …the insect takes off, pulling the
string…可推知此题答案为 B。
The idea of rain making is almost as old as man, but it was not
until 1946 that man succeeded in making rain. In ancient(古代的)
times, rainmakers claimed(声称) to be able to bring rain by many
dancing, singing, killing various kinds of living
creatures(including humans), and blowing a stream of water into the
air from a kind of pipe.
More recently, some rainmakers claimed to make rain by shooting
guns, causing explosions, or burning chemicals, the smoke of which
was supposed to cause rain to fall. These rainmakers asked for as
much as 1, 000 dollars to make an inch of rain. One was so
effective that he was almost hanged. He was believed to have caused
a twenty-inch rain in southern California that flooded that land,
killed several people, and did millions of dollars’ worth of
Before 1946, rainmakers were either liars or honest people who
happened to have good luck. Scientific rain making was started in
that year by Vincent J. Schaefer, a scientist at the laboratories
of the General Electric Company in New York State. His success was
the result of a lucky accident that changed years of failure into
1. One rainmaker was almost hanged because
A. he did not make rain at all
B. he asked for too much money
C. people thought he caused too much rain
D. he killed several people
2. Which of the following methods can make rain?
A. Killing pigs and sheep.
B. Blowing a stream of water into the air from a kind of
C. Shooting guns or causing explosions.
D. None of the above is right.
3. Who was the first rainmaker succeeding in making rain?
A. The one who caused a twenty-inch rain in southern
California.
B. Before 1946, a rainmaker who happened to have good luck..
C. Vincent J. Schaefer, in 1946.
D. The passage doesn’t tell us his or her name.
【答案与解析】人工降雨的想法和人类的历史几乎是一样长，历史上曾演绎出许多人工降雨的闹剧。第一次科学人工降雨是在1946年，由美国纽约州的Vincent
J. Schaefer 完成。
1. C。细节题。根据第2段最后一句He was believed to have caused a twenty-inch rain
in southern California that flooded that land, killed several
people, and did millions of dollars’ worth of damage 可知答案为C。
2. D。判断题。从第2段内容可以明显看出A、B、C三项均不能降雨，所以选D。
3. C。细节题。从最后一段第2句话Scientific rain making was started in that
year(1946) by Vincent J. Schaefer, a scientist at the laboratories
of the General Electric Company in New York State可以确定该题的正确答案。
Some time people call each other “scared-cat”, but have you ever
thought about this expression? When a cat is frightened, its heart
starts beating faster, its muscles get tense, and there are changes
in the chemicals in its bloodstream. Although the cat doesn’t
realize this. Its body is getting ready for action. If the danger
continues, the animal will do one of two things. It will defend
itself, or it will run away as fast as it can.
Something like this also happens to people. When we are excited,
angry, scared, or aroused by other emotions(feelings), our bodies
go through many physical changes. Our hearts beat faster, and our
muscles get tense. All of these changes make us more alert and
ready to react. We, too get ready to defend ourselves or run.
Human beings, however, have a problem that animals never face. If
we give way to our feelings and let them take over, we can get into
trouble. Have you ever said something in anger — or hit somebody —
and regretted it later? Have you ever shouted at a teacher, told
somebody you were lonely, or said you were in love, and then wished
later you had kept your mouth shut? It isn’t always wise to express
your feelings freely.
Does this mean that it’s smarter always to hide our feelings? No!
If you keep feelings of anger, sadness and bitterness hidden away
or bottled up inside, your body stays tense. Physical illness can
develop, and you can feel churned up inside. It can actually be bad
for your health.(It isn’t good to keep pleasant feelings inside
all feelings need to be expressed.)
Feelings that you keep all bottled up inside don’t just go away.
It’s as if you bought some bananas and stuck them in a cupboard.
You might not be able to see them, but before long you’d smell
them. And if you opened the cupboard, chances are you’d see little
fruit flies hovering all over them. They’d be rotten.
You can try to treat emotions as if they were bananas in the
cupboard. You can hide them and you can pretend they don’t exist,
but they’ll still be around. And at last you’ll have to deal with
them, just like those bananas.
1. The best title for this article is _______.
A. Emotions Affect Our Bodies&&B.
What Happens to a Frightened Cat
C. What Happens to An excited Person&D. Feelings
That People Have
2. The underlined words “churned up” in the fourth paragraph mean
puzzled&&&&B.
being hurt
C. made upset
made satisfied
3. The author wrote this article in order to _______.
A. tell us that it isn't good to keep feelings inside
B. give us some advice on how to express our feelings
C. make us face the problem that we have to deal with
D. make us know that it isn't always wise to express our feelings
【答案与解析】文章阐述了人的喜怒哀乐等各种情感都有必要表达出来，否则，对健康不利，甚至会引发各种疾病。
1. A。主旨题。读完全文，很容易明白这篇文章的主旨是“情感影响我们的身体”。
2. C。词义猜测题。细读Physical illness can develop, and you can feel churned
up inside这句，然后对比所给的4个选项，可知只有C最为恰当。
3. D。主旨题。从第3段举的例子可以看出作者的写作目的。
On Oct. 12, 1989, some Chinese scientists were working at the
computers to look for the information they needed. Suddenly they
saw a lot of very bright spots crossing the computer’s screens. At
the same moment the computers were working much slower. To find out
what was happening, they stopped their work to check some parts of
the computers. To their horror, they found out that most of their
stored information was got rid of by computer viruses(病毒).
Obviously all these computers had been infected(传染) by computer
&&& It is said
that the computer viruses were made by a group of young men fond of
playing tricks. They all had excellent education. They created the
viruses just to show their intelligence. This kind of computer
viruses is named Jerusalem Viruses. These viruses can stay in
computers for a long time. When the time comes they will attack the
computers by lowering the functions, damaging normal programs or
even getting rid of all the information.
We now come to know that Jerusalem Viruses often attack computers
on Fridays and that they are spreading to a lot of computers. Among
the countries that suffered computer viruses last year are Britain,
Australia, Switzerland and the U.S. But till now, how to get rid of
the terrible viruses remains a problem.
1. The group of young men created the viruses
to&_______.
A. damage all the computers
B. test their good ability
C. play tricks on operators of the computers
D. attack foreign computer experts
2. According to the passage, computer viruses seem
to&_______.
A. have been in nature for years&
B. be difficult to get rid of at present
C. exist in any computers&
D. be able to be got rid of in the near future
3. The most serious damage caused by the viruses is
that&_______.
A. the computer’s functions are lowered
B. the normal programs are damaged
C. the computers infected by the viruses can no longer be
D. all the information stored in the computers is gone
4. According to the passage, which of the following is true?
A. Scientists have found a way to get rid of the viruses.
B. The Jerusalem Viruses are a great harm to human’s health.
C. The viruses will come to a new computer after staying in the old
one for some time.
D. On Oct. 12, 1989, some Chinese scientists found their computers
were infected by viruses.
【答案与解析】计算机病毒不仅降低计算机的功能，而且还造成储存信息的丢失。
1. C。语义理解题。文章第2段第1句话It is said that the computer viruses were made
by a group of young men fond of playing tricks.
把那群年轻人创造病毒的原因解释得非常清楚。
2. B。语义理解题。既然But till now, how to get rid of the terrible viruses
remains a problem，那计算机病毒肯定很难清除。
3. D。语义理解题。读到第2段最后一句话中的…or even getting rid of all the
information，答案不言自明。
4. D。判断题。读完全文就会发现A、B、C三项内容与文章内容不符，答案非Ｄ莫属。
Nuclear radiation has a certain mystery about it, partly because it
cannot be detected(探测) by human senses. It can’t be seen or heard,
or touched or tasted, even though it may be all around us. There
are other things like that. For example, radio waves are all around
us but we can’t detect them, sense them, without a radio receiver.
Similarly, we can’t sense radioactivity without a radiation
detector. But unlike common radio waves, nuclear radiation is not
harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being
outright by killing masses of cells(细胞)in important organs(器官). But
even the lowest levels can do serious damage. There is no level of
radiation that is completely safe. If the radiation does not hit
anything important, the damage may not be significant. This is the
case when only a few cells are hit, and if there are killed
outright. Your body will replace the dead cells with healthy ones.
But if the few cells are only damaged, and if they reproduce
themselves, you may be in trouble. They reproduce themselves in an
unusual way. They can grow into cancer. Sometimes this does not
show up for many years.
This is another reason for some of the mystery about nuclear
radiation. Serious damage can be done without the knowledge of the
person at the time that damage has occurred. A person can be
irradiated(放射治疗)and feel fine, then die of cancer five, ten, or
twenty years later as a result. Or a child can be born weak or easy
to get serious illness as a result of radiation absorbed by its
grandparents.
Radiation can hurt us. We must know the truth.
1. According to the passage, the danger of nuclear power lies in
A. nuclear mystery&
&&B. radiation detection
C. radiation level
&&&D. nuclear
radiation&&
2. Radiation can lead to serious results even at the lowest levels
A. when it kills few cells
B. if it damages few cells, and if they reproduce themselves.
C. though the damaged cells can repair themselves
D. unless the damaged cells can reproduce them selves
3. Radiation can hurt us in the way that it can _______.
A. kill large numbers of cells in main organs so as to cause death
immediately
B. damage cells which may grow into cancer years later
C. affect the healthy growth of our younger generation
D. lead to all of the above results
4. Which of the following can be mostly possibly inferred from the
A. The importance of protection from radiation cannot be
overemphasized(过分强调).
B. The mystery about radiation has been solved.
C. Cancer can't be caused by radiation.
D. Radiation can hurt those who do not know about its danger.
【答案与解析】核辐射对人类和一切生物都有影响，我们必须正视。
1. D。判断题。根据文章第2段的前面几句(…even the lowest levels can do serious
damage…)可知答案为D。
2. B。推断题。因为The damaged cells reproduce themselves in an unusual
way. They can grow into cancer。
3. D。判断题。A、B、C三项在文中均被提及，所以选D。
4. 通常全文可知，辐射的神秘还未被揭开，所以B项错误；由第2段倒数第二、三句可知，辐射能导致癌症；D项不合常理，所以选A。
Do you have a phobia? No, it is not an infectious (传染病) disease,
but it can make you quite as bad. A phobia is an unreasonable fear
of some particular thing or situation.
Did you know that some people fear heights? That is called
acrophobia. Many people experience claustrophobia when they are in
a closed space such as a small room or a lift. Zoophobia is a fear
of animals. A fear of dirt is called mysophobia. There are names
for fear of thunder, lightning, wide open spaces, people, crowds,
darkness, water, and many other things.
A phobia expert tells us that in the coming of a phobic situation a
person has what is called an ‘anxiety attack’. Blood rushes to his
larger muscles in preparation for flight or fight.
One expert on phobias suggests we race our fears gradually. A
person who is afraid of people could overcome this fear by getting
accustomed to them one at a time. Someone who is afraid of water
could take swimming lessons in the relative safety of a pool with a
lifeguard at hand. A person afraid of heights could practise
looking down from middle heights first until he could handle the
greater ones.
1.A person who is afraid of cats is most likely to have
A. mysophobia&B. acrophobia &C.
zoophobia&&D.
claustrophobia
2. A good way to overcome one’s unreasonable fear of something
would be _______.
A. trying to avoid
preparing for flight or fight
C. getting rid of the anxiety
attack&&D. trying to get used to
3. If you have a phobia, _______.
A. you must take swimming lessons in a safe pool
B. you’d better practise looking down from middle heights
C. you may attend some parties
D. it will be as troublesome as an infectious disease
4. A man in the appearance of phobic situation _______.
A. is called an anxiety
attack&&&B. has
blood rush to his legs
C. has the feeling of
flight&&&D.
fears some particular thing
5. The writer of the text tells us that _______.
A. when some phobia breaks out in someone, he will feel too anxious
about something　　
B. a person who dears people can run a race with others
C. a man afraid of heights can climb to a great building
D. everyone dares to take a lift where there is not a
(1—5 CDDCA)
【答案与解析】本文介绍了恐惧症的症状及其解决办法。
1. C。细节题。根据第2段第4句Zoophobia is a fear of animals可推知此题答案为C。
2. D。细节题。根据文章最后一段的第2句中的…overcome this fear by getting accustomed to
them可推知此题答案
3. D。推断题。根据第1段第2句：它虽然不是传染病，但它使你有同样不好的感受，可推知此题答案为D。
4. C。推断题。根据第3段最后一句Blood rushes to his larger muscles in preparation
for flight or fight可推知此题答案为C。
5. A。主旨题。从文章第1段最后一句A phobia is an unreasonable fear of some
particular thing or situation及全文的内容可推知此题的答案为A。
&&& Every animal
is a living radiator-heat formed in its cells(细胞), which gives off
heat through its skin. Warm blooded animals keep a normal
temperature by continuously replaci smaller
animals, which have more skin for every ounce(盎司) of body weight,
must produce heat faster than bigger ones. Because smaller animals
burn fuel faster, scientists say they live faster.
&&& The speed at
which an animal lives is determined by measuring the rate at which
it uses oxygen. A chicken, for example, uses one-half cubic(立方)
centimeter of oxygen every hour for each gram it weighs. The tiny
shrew-mouse uses four cubic centimeters of oxygen every hour for
each gram it weighs. Because it uses oxygen eight times as fast, it
is said that the shrew-mouse is living eight times as fast as the
chicken. The smallest of the warm blooded animals, the hummingbird,
lives a hundred times as fast as an elephant.
&&& There is a
limit to how small a warm-blooded animal can be. A mammal or bird
that weighed only two and a half grams would starve to death. It
would burn up its food too rapidly and would not be able to eat
fast enough to supply more fuel.
1. The passage says that every animal is a living radiator because
it _______.
A. produces heat in its body
cells&&B. burns fuel to produce
C. gives off heat through its
skin&&D. requires oxygen to
produce heat
2. Small animals are said to live faster than big ones because they
A. have more skin for their body weight&B. replace
lost heat faster
C. burn fuel
faster&&&&&D.
keep a higher body temperature
3. The amount of oxygen an animal uses depends on _______.
A. its body weight
the food it eats
C. its general size and shape
&&D. the length of time it
4. Which of the following can be inferred from the passage?
A. There is no limit as to how large a warm blooded animal can
B. The hummingbird lives faster than any other warm-blooded
C. Small animals have less skin for their body weight than large
D. The hummingbird is the smallest of the warm-blooded
(1—4 CCAB)
【答案解析】本文是说明文，阐述了热血动物的体积与所耗热量，动物生长速度与用氧速度之间的关系。
1. C。细节题。根据 heat formed in its cells is given off through its skin
可推知此题答案为C。
2. C。细节题。根据Because smaller animals burn fuel faster, scientists say
they live faster.可得出答案。
3. A。推断题。根据A chicken, for example, uses one-half cubic centimeter
of oxygen every hour for each gram it weighs. The tiny shrew-mouse
uses four cubic centimeters of oxygen every hour for each gram it
weighs. 可见耗氧量与动物体积有关。
B。推断题。前面说到动物生长速度决定于用氧的速度，而用氧量与动物体积有关，而hummingbird是最小的热血动物，故可得出答案B。
Today, men have reached the top of the world’s highest mountains.
But for many years, even people who lived among the mountains did
not climb them. Indeed, people believed that men could not climb
mountains.
For a long time, mountains were thought to be the home of evil(凶恶的)
spirits. People believed dragons(龙) lived on the mountainside. They
thought these dragons would gobble up anyone coming near.
When men began to climb mountains, they faced many dangers. The air
high on a mountain was freezing cold. There were deep cracks(裂缝)
into which a climber could fall. Roaring winds and terrible storms
could sweep a man off the mountainside.
At first, men did not have the proper equipment to climb high
mountains. They did not have ice axes, ropes or the right kind of
Later, men could not reach the top of the highest peaks for another
reason. As a man climbed higher, the air became thinner. There was
less oxygen to breathe above 18 000 feet, a climber had to stop
every few steps to catch his breath. His heart beat faster and his
blood became thick. Above 25 000 feet, a climber would begin to see
things that were not here. He could no longer think clearly about
what he had to do.
1. This passage mainly tells us about _______.
A. the dangers of climbing high mountains
B. the evils spirits and dragons that live on the
mountainside
C. the proper equipment needed to climb mountains
D. people who live in mountains
2. In this passage the words “gobble up” means _______.
&&& A. hold
back&&&&B.
catch up with
&&& C. get hold
eat up very fast
3. Which of the following is true?
&&& A. The
higher one climbs, the less oxygen he will breathe.
&&& B. The main
reason why people couldn’t reach the top of the mountains is that
they didn’t have proper equipment.
&&& C. The
faster one climbs, the less oxygen he will need.
D. Fast beating hearts need thick blood.
(1—3 ADA)
【答案与解析】本文说明了登山过程中会遇到各种困难和危险。
1. A。主旨题。根据文章第 1 段最后一句 …people believed that men could not climb
mountains 及全文的内容，可推知此题答案为 A。
2. D。词义猜测题。根据常识及选项的比较，可推知此题的答案为 D。
3. A。细节题。根据文章第 5 段第 2 句 As a man climbed higher, the air became
thinner 可知此题答案为 A。
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