题目内容
（请给出正确答案）
A、It has be heavy to prevent astronauts from floating away
B、It must also work as a SCUBA device
C、It needs to double as a hovercraft
D、It must be lightweight and easy to mover in
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更多“Who's one the biggest challeng…”相关的问题
For those who do not take breakfast, the good news is that _______. A. several studies have been done in the past few years B. the omission of breakfast does no harm to one’s health C. adults have especially made studies in this field D. eating little in the morning is good for health
All the housewives who went to the new supermarket had one great ambition (strong wish) :to be the lucky customer(顾客) who did not have to pay for shopping. For this was what the notice just inside the entrance promised. It said: "Remember, once a week, one of our customers gets free goods. This may be your lucky day!"
For several weeks, Mrs. Edward's hoped, like many of her friends, to be the lucky customer. Un like her friends, she never gave up hope. The cupboards in her kitchen were full of things which she did not need. It's no use her husband trying to persuade her. She dreamed of the day when the manager of the supermarket would come to her and said: "Madam, this is your lucky day. Everything in your basket is free."
One Friday morning, after she had finished her shopping and had taken it to her car, she found that she had forgotten to buy any tea. She dashed back to the supermarket, got the tea and went to ward the cashdesk. As she did so, saw the manager approach her. "Madam," he said, holding out his hand, "I want to congratulate you! You are our lucky customer and everything you have in your basket is free."
The housewives who went to the supermarket were ______.
A．poor
B．hopeful
C．fortunate
D．hopeless
Tina: Polly, do you spend most of your spare time on the Internet？
Polly: Honesty speaking, no. I&39;m not one of those guys who are always playing online games orsurfing the Internet. I think, nowadays, many people spend too much time on their computers andmobile phones, but not enough time in front of one another.
From Polly&39;s point of view, people should___________ .
A.surf the Internet
B.learn more new things
C.play online games
D.communicate with one another
Mrs. Townsend's death had been covered up and it was discovered ______.
A．only yesterday
B．five months afterwards
C．two years afterwards
D．quickly
I (21) by Mr. J. Gerald Cowcamper's house one day and was greeted by a rather old looking dog. She was a gentle beast who (22) her tail as she pushed her nose against my hand.
"What's her (23) ？" I asked.
"I call her 'Dog Face'," replied the old (24) .
" (25) do you call her that？" I inquired.
"Isn't it obvious？" asked Mr. Cowcamper.
"Not really."
Mr. Cowcamper cradled the old animal's head in his hands. "If you (26) at just the right angle, you can see that she seems to have a dog's face," he (27) .
"But she is a (28) !" I said.
"Shhhh!" Mr. Cowcamper responded with the loudest whisper I have ever (29) . "Don't let her hear you say that!
I said (30) , because I didn't know what to say.
21 . A. stopped
B. ran
C. went
D. carried
The fork was an ancient agricultural tool, but for centuries no one thought of eating with it. Not until the eleventh century, when a young lady from Constantinpole brought her fork to Italy, did the custom reach Europe.
By the fifteenth century the use of the fork was widespread in Italy. The English explanation was that Italians were averse to rating food touched with fingers, "Seeing all men's fingers are not alike clean." English travelers kept their friends in stitches while describing this ridiculous Italian custom.
Anyone who used a fork to eat with was laughed at in England for the next hundred years. Men who used forks were thought to be sissies, and women who used them were called show - offs and overnice. Not until the late 1600's did using a fork become a common custom.
The custom of eating with a fork was ______ .
A．brought to Europe from America
B．begun when forks were invented
C．brought to Europe from Asia
D．invented by Italians
With the large number of dogs roaring through our communities， people need to know the facts about
rabies (狂犬病)， a fatal disease caused by animal bites. Despite vaccination (接種疫苗) programs， rabies is still very prevalent， and will continue to be a serious public health problem for
many years to come.
Rabies strikes the central nervous system and brings on choking， convulsions (抽搐) and inability to swallow liquids. It can even cause death. If you or anyone in your family is bitten
by dog， cat or other animal， you should not panic， but thoroughly wash the wound with plenty of
soap and water and rush to nearby hospital for immediate treatment. If you own the animal which did the
biting， you should immediately call a veterinarian for advice and make sure the public health
authorities know when and where the biting took place and who was bitten.
Rabies is a kind of disease which ________.
A. causes heart attack
B. hurt one‘s legs
C. causes nerve-centre problem and breathing problem
D. strikes one‘s brain
Jenkins was a jeweller, who had made a large diamond (钻石) ring worth ￡57,000 for the Silkstone Jewellery Shop. When it was ready, he made a copy of it which looked【21】like the first one but was worth only ￡2,000. This he took to the shop, which【22】it without a question.
Jenkins gave the much more【23】ring to his wife for her fortieth birthday. Then ,the husband and wife【24】to Paris for a weekend. As to the【25】ring, the shop sold it for ￡60,000.
Six months later the buyer【26】it back to Silkstone's office. "It's a faulty (有瑕疵的)diamond," he said. "It isn't worth the high【27】paid. "Then he told them the【28】. His wife's car had caught fire in an【29】. She had escaped (幸免),【30】the ring had fallen off and been damaged (损坏) in the great【31】of the fire.
The shop had to【32】. They knew that no fire on earth can【33】damage a perfect diamond. Someone had taken the【34】diamond and put a faulty one in its place. The question was: who【35】it？
A picture of the ring appeared in the【36】. A reader thought he【37】the ring. The next day, another picture appeared in the papers which【38】a famous dancer walking out to a plane for Paris. Behind the dancer there was a woman【39】a large diamond ring," Do you know the【40】with the lovely diamond ring？" the papers asked their readers. Several months later ,Jenkins was sentenced to seven years in prison.
(41)
A．only
B．surely
C．nearly
D．exactly
Ben-Shalar uses three optimistic exercisers. When he feels down-sag, after giving a bad lecture-he grants himself permission to be human. He reminds himself that mot every lecture can be a Nobel winner; some will be less effective than others. Next is reconstruction, He analyzes the weak lecture, leaning lessons, for the future about what works and what doesn’t. Finally, there is perspective, which involves acknowledging that in the ground scheme of life, one lecture really doesn’t matter.
When we see well, we do not think about our eyes very often. (79) It is only when we cannot see perfectly that we realize how important our eyes are.
People who are nearsighted can only see things that are very close to their eyes. Everything else seems blurry (模糊的). Many people who do a lot of close work, such as writing, reading and sewing, become nearsighted. Then they have to wear glasses in order to see distant objects clearly.
People who are farsighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm's length. If they want to do much reading, they must get glasses, too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts (白内障). Long ago these people olden became blind. Now, however, it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself, look at object out of one eye; then look at the same object out of your other eye. You will find the object's relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.
We should take good care of our eyes ______.
A．only when we can see well
B．only when we cannot see perfectly
C．even if we can see dell
D．only when we realize how important our eyes are
It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they likely to be in intelligence. Thus if we take two unrelated people at random from the population, it is likely that their degree of intelligence will be completely different. If,on the other hand, we take two identical twins, they will very likely be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory other the work is boring. We would soon find differences in intelligence developing, and this indicates the environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degree of intelligence.
The writer is in favor of the view that man' s intelligence is given to him ______ ．
A．at birth
B．both at birth and through education
C．through education
D．neither at birth nor through education
