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[主观题]
How long ago ________his diet.
A、was he beginning
B、did he begin
C、will he begin
D、has he begun
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题目内容
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A、was he beginning
B、did he begin
C、will he begin
D、has he begun
如果结果不匹配，请 联系老师 获取答案
更多“How long ago ________his diet.”相关的问题
I wonder how long ago this school ______.
A．has begun
B．begins
C．had begun
D．began
Milk was one of the main foods for people long before history was written. Maybe【21】will remain an important food as long as there are【22】that give milk. The old word "milk"【23】Sanskrit(梵文), one of the oldest【24】known to man. A very old picture of milking,【25】was drawn five thousand years ago, has been found.
In the years long ago, people got their milk【26】their own animals. But【27】modern times new inventions made the milk industry(产业) a big business.【28】1851 Gall Borden found a way to【29】some of the water out from milk. This made milk keep longer. Four years later, Louis Pasteur【30】 a way to kill the bacteria(细菌) in milk. Then a special milk bottle was made. This was followed【31】 the invention of machines that could fill bottles with milk. The discoveries had a great effect(影响) on the milk industry. They meant that milk could be kept longer.
Some people believe that milk drinking will become less popular【32】 it has been. But remember how long milk has been an important food【33】 think of the many ways【34】 it is useful. It seems【35】 to say that the milk industry will always be important.
(36)
A．it
B．they
C．he
D．she
The moon is about 384 000 kilometers away from the earth. A plane can not fly to the moon because the air reaches only 240 kilometers high above the earth. Then there is no air. But something can fly even when there is no air. That is' a rocket (火箭).
Rockets can fly out into space. Rockets with men in them have already reached the moon. Some rockets without men in them have flown to other parts, much farther away from the earth than the moon in the universe. One day, rockets may be able to go to any place.
Scientists knew ______ about the moon a long time ago.
A．nothing
B．many things
C．everything
D．little
根据内容回答下列各题.
Not long ago, there lived in Auckland a working family who dreamed about a house of their own. Anyone then could read in the newspapers about the building companies who offered to put people into a new house 51 only a $1,000 deposit. Of course, the remainder had to be paid off with interest over a period of twenty years or so.
The worker and his wife hopefully went to one of these companies 52 this wonderful offer. And the man in the office said．“Yes, sure. You bring along $1,000 and we can 53 you with a new house.” So the worker and his wife had to work hard and in twelve months’ time they returned to the building man with $1,000. But the man in the office said, “Look, I’m sorry, 54 we’ll need $1,500 now. Costs have gone up since we saw you last, you know.”
The couple thought it over and decided it would not take very long to save the extra $500 if they worked hard. In six moths they worked 55 overtime and saved the $500 in spite of the high rent they had to pay for their flat. Back to the building man they 56 with their $1,500. But to their surprise he 57 the deposit was now $3,000. Now somewhat wiser, the worker said, “And the next time, I dare say we’ll find the deposit rising once more. How have we 58 save the extra $1,500？” “Well”, said the man, “I think we can stabilize the situation for about twelve months. By the time you come with $3,000, we will have had the house 59 for you.
The couple left, sad at heart as they saw their dream house 60 . By the time they had saved the extra $1.500, no doubt the deposit would have become still higher, maybe $5,000, then $10,000 and then…!
51.
A.for
B.with
C.on
D.to
The main idea of the passage is given in the sentence beginning with "______"
A．Not long ago a California policeman stopped…
B．Thousands of babies are given strange names…
C．There's a Katz Neow in Washington D.C.…
D．But perhaps the strangest name of all is…
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
As a result of his kindness, many people came to visit him. Among them was a newspaperman. During their talk,Johnson remarked that he was seventy-five and expected to live to be a hundred.
The newspaperman asked him how he managed to be healthy at seventy-five. Johnson had a sense of humour (幽默).He liked whisky (威士忌酒)and drank some each day. “I have an injection(注射)in my neck each evening,”he told the newspaperman,thinking of his evening glass of whisky.
The newspaperman did not understand what Johnson meant. In his newspaper he reported that Johnson was seventy-five and had a daily injection in his neck. Within a week Johnson received thousands of letters from all over Britain, asking him for the secret of his daily injection.
____The gift of money to the school suggests that Johnson .
A.had no children
B.was a strange man
C.was very fond of children
D.wanted people to know how rich he was
Many people wrote to Johnson to find out____.A.what kind of whisky he had
B.how to live longer
C.how to become wealthy
D.in which part of the neck to have an injection
The newspaperman____.A.should have reported what Johnson had told him
B.shouldn’ t have asked Johnson what injection he had
C.was eager to live a long life
D.should have found out what Johnson really meant
When Johnson said he had an injection in his neck each evening, he really meant that____.A.he drank a glass of whisky in the evening
B.he needed an injection in the neck
C.a daily injection in the evening would make him sleep well
D.there was something wrong with his neck
请帮忙给出每个问题的正确答案和分析，谢谢！
People who are near-sighted can only see things that are very close to their eyes.' Everything else is not so clear. Many people who do a lot of close work, such as writing, reading and sewing, become near sighted. Then they have to wear glasses in order to see distant (远处的) things clearly.
People who are far-sighted 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 often 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 (角度). To prove this to yourself, look at an object out of one eye; then look at the same object out of the other eye. You will find the object's relation to the background (背景) 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 cannot see perfectly
B．only when we can see well
C．even if we can see well
D．only when we realize how important our eyes are
Recently I have avoided watching games, not even at a TV live coverage, still less to the match in person. That's because I know I couldn't control myself. When watching a match, I'll inevitably take sides and be emotionally involved, strongly wishing for the triumph of the side over its opponent. As I often side with the "weaker" in a match, watching it will only spell worry and misery for me.
Not long ago when I accompanied my wife to a super world tennis match my horizons broadened as regards sports competition. It seemed to me that wins and losses were relative and transient. What mattered was the ever-higher level achieved through contest. Victory was a result of all the efforts made by both sides. As one of the audience, I should applaud the energetic performance of both to the neglect of the result. Why should I regard the contest as a life-and-death struggle, the winner as survival and the loser as dead？
The basketball team was often defeated because ______.
A．the team members didn't know how to play basketball
B．the team members were students who only know how to study book knowledge
C．there were only one or two members who were qualified for basketball
D．the morale of the team was low
(41~45) Researchers have found that drugs used to treat human seizures can delay aging in worms by as much as 50 percent. The roundworms used for the study are similar to humans in their molecular makeup, raising the
possibility that the drugs could also extend the life span of humans。
第41题：“By finding a class of drugs that delays aging we have found a relationship between the function of the nervous system and aging that was not well understood, ” said Kerry Komfeld, a geneticist at the Washington University School of Medicine in St. Louis, Missouri. The findings are detailed this week in the journal Science。 The discovery came out of the thesis work by one of Komfeld’s graduate students, Kimberley Evason. About four years ago, Evason began exposing groups of the roundworm Caenorhabditis elegans to commercially available drugs to see if the drugs would delay aging or promote longevity。
A. But Komfeld said scientists will not know about the applicability of the drugs in humans until a similar study is done on humans. “What’s very encouraging is that these drugs were developed to treat humans, and they are well understood, because they’ve been used for a long time, ” he said。
B. Later the scientists discovered that two related anticonvulsant drugs also lengthened the lives of the worms-in the case of one drug, by almost 50 percent. “This was a big surprise to use, Komfeld said. ”“We didn’t think anticonvulsant drugs had any particular relationship to aging. That connection was completely unexpected. ”
C. Roundworms are a poor subject for experiments, because they are not like humans, even though their molecules are similar. For example, they have no bones, nor do they show emotions, making it difficult to know how exactly human subjects would react to these drugs in large quantities. However, using the worms allows experiments to be conducted quickly, because they do not live for long。
D. “Somehow the neural activity seems to regulate the aging of all of the body the skin, musculature, and reproductive tract, ” Kornfeld said. “Somehow the nervous system coordinates the progress of all these tissues, evidently, though the life stages. But we don’t know how it does that. ”
E. The discovery may also shed light on the little-understood aging process. Since the drugs act on the neuromuscular systems of both humans and worms, the findings hint at a link between neural activity and aging。
F. Unlike vertebrates, the worms are ideal subjects for the study of aging because of their short life spans, which last only a couple of weeks in a laboratory. The worm is well known in genetics, and the worm’s genome has been sequenced。
G. Use of this drug has been permitted by law since 1998 and wider use is now expected as a result of the studies. “We can clearly link this drug with human aging, but we still need to find proof, says Kornfeld optimistically. ”
