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[主观题]

Other experiments have shown 【61】 the brain needs time to "digest" 【62】 has been learned.

The time necessary 【63】 this is 5 to 10 minutes. After a break of this period of time the memory will have 【64 】what has just been learnt, and more will be remembered. During this break. 【65】 is important to exercise the right side of the brain, 【66】 the left side is used during a learning period. 【67】 you should relax in some way. 【68】 music, breathing in fresh air, and 【69】 at a picture, are all ways of using 【70】 side of the brain.

(61)

A．that

B．what

C．which

D．it

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发布时间：2021-12-29

更多“Other experiments have shown 【61】 the brain needs time to "digest" 【62】 has been learned.”相关的问题

第1题

The article does not say whether the scientists' experiments with dogs have ______.A．benef

The article does not say whether the scientists' experiments with dogs have ______.

A．benefited animals other than dogs

B．served man

C．helped other dogs

D．contributed to medical knowledge

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第2题

The article does not mention whether the scientists' experiments with dogs have ______.A．b

The article does not mention whether the scientists' experiments with dogs have ______.

A．benefited animals other than dogs

B．served man

C．helped other dogs

D．contributed to medical knowledge

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第3题

Halley made his discovery ______.A．by doing experimentsB．by means of his own careful obser

Halley made his discovery ______.

A．by doing experiments

B．by means of his own careful observation

C．by using the work of other scientists

D．by chance

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第4题

After some experiments, the doctors found that ______. A. the influenza could be cured

After some experiments, the doctors found that ______.

A. the influenza could be cured like other types of influenza

B. the influenza must be treated in a special way

C. the influenza did not have to be treated

D. the influenza could not be cured by any known medicine

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第5题

Let’s increase experiments with other forms of energy, and let’s not be afraid__1__costs.It is a matter of survival and there will be no time for experimenting when the oil__2__.Meanwhile, let's be thrifty and use oil only__3__necessary.The days of oil galore are over.Let's design engines which are more efficient.Let's use engines __4__small power wherever possible.Let's replace liquid fuel by solid fuel wherever possible.For power plants liquid fuel is not essential.__5__aeroplanes it is.And there is plenty of coal available.

1.( );

A.for

B.with

C.of

D.to

2.( );

A.runs off

B.runs up

C.runs down

D.runs out

3.( );

A.than

B.when

C.while

D.where

4.( );

A.in

B.with

C.at

D.by

5.( );

A.For

B.To

C.With

D.Towards

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第6题

For as long as humans have raised crops as a source of food and other products, insects ha

ve damaged them. Between 1870 and 1880, locusts ate millions of dollars' worth of crops in the Mississippi Valley. Today in the United States the cotton boll weevil damages about 300 million dollars' worth of crops each year. Additional millions are lost each year to the appetites of other plant-eating insects. Some of these are corn borers, gypsy moths, potato beetles, and Japanese beetles. In modern times, many powerful insecticides(杀虫剂) have been used in an attempt to destroy insects that damage crops and trees. Some kinds of insecticides, when carefully used, have worked well. Yet the same insecticides have caused some unexpected problems. In one large area, an insecticide was used against Japanese beetles, which eat almost any kind of flower or leaf. Shortly afterward, the number of corn borers almost doubled. As intended, the insecticide had killed many Japanese beetles. But it had killed many of the insect enemies of the corn borer as well. In another case, an insecticide was used in Louisiana to kill the troublesome fire ant. The insecticide did not kill many fire ants. It did kill several small animals. It also killed some insect enemies of the sugarcane borer, a much more destructive pest than the fire ants. As a result, the number of sugarcane borers increased and severely damaged the sugarcane crop. To be sure that one insect pest will not be traded for another when an insecticide is used, scientists must perform careful experiments and do wide research. The experiments and research provide knowledge of the possible hazards an insecticide may bring to plant and animal communities. Without such knowledge, we have found that nature sometimes responds to insecticides in unexpected ways. An insecticide was used in Louisiana to kill the troublesome______.

A.corn borer

B.Japanese beetle

C.gypsy moth

D.fire ant

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第7题

One way that scientists learn about man is by studying animals, such as mice and monke

ys.科学家了解人类的一种方法是研究如老鼠、猴子这样的动物。The scientists in this laboratory are

experimenting on mice. They are studying the relationship between diet and health. At this time, over one hundred experiments are being done in this laboratory.

In one of these experiments, the scientists are studying the relationship between the amount of food the mice eat and their health. The mice are in three groups. All three groups are receiving the same healthy diet. But the amount of food that each group is receiving is different. The first group is eating one cup of food each day, the second group is eating two cups, and the third group of mice is eating three cups.

After three years, the healthiest group is the one that is only eating one cup of food each day. The mice in this group are thinner than normal mice. But they are more active. Most of the day, they are running, playing with one another, and using the equipment in their cages. Also, they are living longer. Mice usually live for two years. Most of the mice in this group are still alive after three years.

The second group of mice is normal weight. They are healthy, too. They are active, but not as active as the thinner mice. But they are only living about two years, not the three years or more of the thinner mice.

The last group of mice is receiving more food than the other two groups. Most of the day, these mice are eating or sleeping. They are not very active. These mice are living longer than the scientists thought - about a year and a half. But they aren't as healthy. They're sick more often than the other two groups.

(1)、The scientists in the laboratory are studying the relationship between the amount of food and diet.

A：T

B：F

(2)、The first two groups are receiving the most food.

A：T

B：F

(3)、The first group is the thinnest because they do not have a healthy diet.

A：T

B：F

(4)、Normal mice usually live for two years.

A：T

B：F

(5)、The text tells us that people who eat less and exercise more will live longer.

A：T

B：F

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第8题

Dear Mr. Jones:Thanks a lot for your inquiry （147) information on our leather shoes. We ha

Dear Mr. Jones:

Thanks a lot for your inquiry (147) information on our leather shoes. We have the pleasure to enclose our latest catalogue and price list. On top of that, samples of various materials we regularly use in manufacturing are (148). Moreover, we are informing you that we would like to cooperate on product lines.

We are also sending you another catalog containing various types of other leather products. If (149), please fax us item numbers so that we may send you samples to show our quality.

Thank you for your interest in our products.

Sincerely yours,

Catherine, Manager of Sales

(47)

A．requests

B．requested

C．requesting

D．being requested

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第9题

Futurists love computers. After all, 40 years ago electronic digital computers didn't exis

t; today microchips (微型集成电路片) as tiny as a baby's fingernail are making all sorts of tasks faster and easier. Surely the future hold still more miracles.

Some of the computer experiments now going inspire imagination of the future. For example, scientists are working in devices that can electronically perform. some sight and hearing functions, which could make easier for the blind and deaf. They are also working on artificial arms and legs that respond to the electric impulses (脉冲) produced by the human brain. Scientists hope that someday a person who has lost an arm could still have near-normal brain control over an artificial arm.

Video games, computerized effects in movies, and real-life training machines now being used by the U. S. Army are causing some people to predict new educational uses for computers. Computers could someday be used to imitate travel to other planets, to explore the ocean floor or to look inside an atom.

Experiment with electronic banking and shopping inspire predictions that these activities will soon be done from home computer terminals (终端) . Cars, too, might be equipped with computers to help drivers find their way around or to communicate with home and office computers.

Many people, including handicapped (残废的) workers with limited ability to move around, already are working at home using computer terminals. Each terminal is connected to a system at a company's main office. Some futurists say the day may come when few people will have to leave home to go to work—they'll just turn on a terminal.

Which of the following would be the most appropriate title for the passage？

A．Futurists and Computers

B．A Look at Future Uses of Computers

C．Computer Experiments

D．Scientists and Computers

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第10题

There may also be other targets not yet explored that affect aging and neuromuscul

ar function. Said Kornfeld: “The process of aging remains mysterious. ”

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. ”

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