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听力原文:Social insects live in integrated communities which in some ways are similar to h

听力原文: Social insects live in integrated communities which in some ways are similar to human communities. In both types of community there is division of labor. In insect societies, certain insects are responsible for reproduction; the workers collect food While the soldiers defend the colony. In the same way human groups such as farmers and shopkeepers have specialized functions in producing goods and providing services to the community.

Insect and human societies are also alike in that individual members of the community work together. White ant workers coordinate their efforts to build nests. Similarly, in human societies, engineers, architects, town planners and construction workers unite to build cities.

The nests of social insects are as complex as a man-made city. In some insect nests special accommodation is provided for the young and for food storage. Many nests also have devices for regulating the temperature. So insect nests are as functional as human houses.

It is not surprising, therefore, that many analogies have been made between social insects and human societies. It must not be forgotten, however, that insects' social behaviors are determined by innate instinctive mechanisms. Insects show no capacity for learning or for developing a social tradition based on learning.

(33)

A.They both live in communities.

B.They both have soldiers to defend their societies.

C.They both show great capacity for learning.

D.They both have a division of labor.

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更多“听力原文:Social insects live in integrated communities which in some ways are similar to h”相关的问题

第1题

听力原文:Most ants are hard workers and often work from six in the morning until ten at ni

听力原文: Most ants are hard workers and often work from six in the morning until ten at night. The work is divided among the worker ants so that each one has a certain amount to do. We do not know how they decide what each one is to do, for they do not talk. Some people think ants follow each other by their sense of smell. Ants often live to be a year old, and some have been known to live six or seven years. One way they get their food is from plant insects which we might call their cows. The ants milk these "cows" by tapping the insects gently until a drop of honey comes out. Then they eat the honey. Ants take very good care of these plant insects and often build a covering over them so that they will be protected from the rain.

(30)

A.One.

B.Few.

C.Several.

D.Many.

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第2题

听力原文:Scientists have discovered that plants themselves produce many poisonous chemical

听力原文: Scientists have discovered that plants themselves produce many poisonous chemicals for defense against insects. But insects have developed ways of dealing with them and, in fact, have been eating plants for about 250 million years. Now insects are using these same mechanisms to deal with man-made poisons—insecticides. This is why resistance of insects to insecticides has developed so rapidly.

What should be done? Scientists studying the problem suggest that farmers use less insecticides. At the moment, farmers regularly spray crops as a precaution against problems that are caused by large numbers of pests. They should, instead, spray only where pests have actually been seen. Secondly, farmers could use a combination of two or three insecticides at once. To survive, the insects would need to become resistant to two or more insecticides at the same time.

The most surprising suggestion, perhaps, is that at certain times of the year, farmers should actually try to attract insects onto the crops they are trying to protect. The new insects will mate with those which survived from a certain kind of insecticide and will lessen the latter's resistance to it.

Scientist hope that these and other measures will postpone the day when farmers and scientists will have to stand by while new super-bugs which may be resistant to all poisons invade our farms and devour our crops.

What have scientists discovered about plants and insects?

A.Plants produce many poisonous chemicals for defense against insects.

B.Insects develop ways of dealing with natural poisonous chemicals but not man-made ones.

C.Farmers must spray plants all the time.

D.Farmers must use different brands of insecticides.

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第3题

听力原文:M: I have decided to take six courses this semester.W: Don't count on a social li

听力原文:M: I have decided to take six courses this semester.

W: Don't count on a social life.

Q: What does the woman imply?

(8)

A.The man shouldn't socialize.

B.The man will have too heavy a workload to have social life.

C.The man shouldn't neglect his social life.

D.The man doesn't want to have a social life.

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第4题

听力原文:M: Good afternoon. May I help you?W: Yeah. I'm going camping, and I need somethin

听力原文:M: Good afternoon. May I help you?

W: Yeah. I'm going camping, and I need something to keep the insects away.

M: How about these. They're new. They're insect guards.

W: I've never seen anything like them.

M: You can use them to keep insects off you-flies, mosquitoes...any insect.

W: These will keep insects off me? How?

M: They cover you. You know, like a net. You put one on your head, one on each hand, and one on each foot. You just put them over your body. The insects can't bite you.

W: Right. Actually, I think I just want some insect spray.

M: You don't want to try the guards?

W: No, thanks. Just a can of insect spray, please.

M: I see.

What did the woman buy at last?

A.Insect guards.

B.Some insect nets.

C.A can of insect spray.

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第5题

听力原文:Man: Because you need water for various reasons, you often end up making your ove
rnight camp by a river. Providing you take care to keep insects away, this can be as healthy a place as any. Much as you might feel you need a good wash, one trap not to fall into, though, is the use of soap or shampoo. These may make you feel good, but actually give off unnatural smells in the jungle which act as a magnet to insects, thus increasing the chances of your getting bitten. Better to actually go in for a dip, being careful to dry off and re-apply your anti-insect cream immediately afterwards.

You hear a man talking to a group of people who are going on an expedition into the rainforest. What does he advise them against? ......

A.sleeping in places where insects are found.

B.using substances which attract insects.

C.bathing in areas where insects are common.

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第6题

听力原文:With a circulation in more than 150 countries and regions, China Daily is an impo
rtant source of information on the politics, economy, law, military affairs, culture, sports, education and social life of China.

______

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第7题

听力原文:Scientists have observed that plants themselves produce many poisonous chemicals

听力原文: Scientists have observed that plants themselves produce many poisonous chemicals for defense against insects. But insects have developed ways of dealing with them and,in fact,have been eating plants for about 250 million years.Now insects are using these same mechanisms to deal with man-made poisons-insecticide.This is why resistance of insects to insecticide has developed so rapidly.What should be done?Scientists studyilg the problem suggest that farmers use less insecticide.At the moment,famlers regularly spray crops as a precaution against problems that are caused by large numbers of pests.They should,instead,spray only where pests have actually been seen.Secondly,farmers could use a combination of two or three jnsecticide at once.To survive,the insects would need to become resistant to two or more poisons at the same time.The most surprising suggestion,perhaps,perhaps,is that,at certain times of the year,famers should actually try to attract new insects onto the crops they are trying to protect.The new insects will mate with those which survived from a certain kind of insecticide and will lessen the latter's resistance to it.

Scientists hope that these and other measures will postpone the day when farmers and scientists will have to stand by while new super bugs which may be resistant to all our poisons invade our farms and devour our crops.

(30)

A.There are 250 million plants eaten by insects.

B.There are fewer plants than 250 million years ago.

C.They have their way of guarding against insects.

D.They have a better immune system than before.

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第8题

听力原文:Early onset of depression in children and teens is increasingly common. Depressed
adolescents are at high risk for school failure, social isolation, promiscuity, "self-medication", and even suicide—the third leading cause of death among 15-to 24-year-olds.

School failure and social isolation can lead to early onset of depression in children and teens, and the trend is becoming increasingly common.

A.正确

B.错误

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第9题

听力原文:With the new laws and social awareness, we'll get pollution under control. Beside

听力原文:With the new laws and social awareness, we'll get pollution under control.

Besides the new laws, what else is important to deal with pollution?

A.New regulations.

B.Joint efforts of all governments.

C.Social consciousness.

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第10题

听力原文:W: Hi! Did you watch that documentary on TV last night?M: No, I was in a meeting,

听力原文:W: Hi! Did you watch that documentary on TV last night?

M: No, I was in a meeting, and unable to go home early. What was it about?

W: It was about insects.

M: Insects?

W: Yes. Do you know? They are the most successful creatures on the earth.

M: What, more successful than humans?

W: Yeah. Because they were around long before people were, and there are far more insects than there are humans. What’s more, they are reproducing all the time.

M: Well, I suppose that’s true.

W: And they are incredibly adaptable.

M: In what way?

W: Well, take mosquitoes for example. You know, the things that spread the disease. What troubles us is that every time we try to wipe out the mosquitoes with some new insecticide, they change their body chemistry.

M: Haven’t they just brought out a new medicine to fight the disease?

W: Yes, they have. But I bet that within five years they’ll be looking for a new one! The mosquitoes will simply adapt again!

M: I think it keeps scientists employed!

W: I guess so.

(23)

A.He was watching the documentary on TV.

B.He was attending a party.

C.He was watching a movie.

D.He was attending a meeting.

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