题目内容
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According to the anther, the challenge on American schools comes from______.
A．the progression of globalization of economy
B．the improvement of education in other countries
C．the development of science and technology
D．the flooding of foreign students
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更多“According to the anther, the challenge on American schools comes from______.A．the progress”相关的问题
According to Choe's hypothesis，
A．the“I'm dead”chemical leaves the body of an ant when it dies．
B．an ant still smells like a living one when it dies．
C．an ant gives off a new chemical when it dies．
D．the“I'm not dead yet”chemical leaves the body of an ant when it dies．
According to Choe's hypothesis，
A．the“I'm dead”chemical leaves the body of an ant when it dies．
B．an ant still smells like a living one when it dies．
C．an ant gives off a new chemical when it dies．
D．the“I'm not dead yet”chemical leaves the body of an ant when it dies．
A.seed masses are the same.
B.germination rates on ant waste piles are the same.
C.percentages of elaiosome mass per seed are the same.
D.rates of production of seeds after 1year are the same.
According to the passage, how are ants guided by trail pheromones？
A．They concentrate on the smell of food.
B．They follow an ant who is familiar with the trail
C．They avoid the vapor spaces by moving in a straight line.
D．They sense the vapor through their antennae.
A．These products are cheaper and more persuasive.
B．They are abiding by a kind of new contract.
C．The manufacturer of the products urges them to buy.
D．Buying such products has become a vogue.
阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。
There are more ants than any other kinds of land animals in the world. They range from 0.1 to 1 inch long and are usually yellow, brown, red, or black. Ants live in societies in which they depend on one another. The societies are not all exactly the same because there are ants of very many kinds. But in general, each kind has ants of three main typesA、queens, males, and workers.
The ants have a good many enemies. They include birds, bears and ant eaters of various kinds. In some cases other ants are their worst enemies, as man’s enemy is man. In some parts of the world, red ants march in large armies to attack the homes of black ants. Some of them succeed in getting inside of the tunnels of black ants, whose entrances have been blocked. They try to carry the black ant babies away. The black ants do all they can to prevent that. They send their biggest soldiers into action. Very many of the red ants soldiers are killed but some escape with babies belonging to the black ants. The red ants take the babies home and bring them up. They become the only workers for the red ants.
Ants as a group are beneficial to humans. Their tunnels mix and soften the soil, in some places replacing the activity of earthworms. Some of ants are harmful to humans. For example, the fire ant, which has a painful bite, is a serious pest to humans and domestic animals in many parts of the world.
1. Which kind of ants is not regarded as the main types of ants in general？ {A、B、C}
A. Queen ants.
B. Soldier ants.
C. Worker ants.
2. According to the passage, what do we learn about the ants’ enemies？ {A、B、C}
A. They are of many kinds.
B. They are birds and ant eaters.
C. They are the same as man’s enemies.
3. The red ants attack the black ants’ home because {A、B、C}.
A. black ants are better soldiers
B. red ants are stronger than black ants
C. they don’t have workers of their own
4. According the passage, which of the following statements is TRUE？ {A、B、C}
A. The number of ants is the most in the world.
B. Each ant depends upon itself in the society.
C. Ants are useful to human on some conditions.
5. The main purpose of the passage is to {A、B、C}.
A. explain some information about ants
B. show the difference between red ants and black ants
C. convince people that ants as a group is beneficial insect
The making and care of the gardens and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible for chopping up leaves to make them suitable for use in the gardens and for cleaning the nest. A third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The largest are the soldier ants, responsible for defending the nest.
To find out how good the various size-groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size-groups, and then measured how efficiently these ants could find leaves and run back to the nest. Then he repeated the experiment for each of the other size-groups. In this way he could see whether any group could do the job more efficiently than the group normally undertaking it.
The intermediate-sized ants that normally perform. this task proved to be the most efficient for their energy costs, but when the scientist examined the whole set of jobs performed by each group of ants it appeared that some sizes of worker ant were not ideally suited to the particular jobs they performed.
In which way are the ants different from other non-human societies？
A．They do not need to search for food.
B．They do not need to look for shelter.
C．Individuals vary in social status.
D．Individuals perform. different functions.
under ground. The small black ants that we see running back and forth in the grass are the same ants that bother us by coming to our picnics uninvited. They are not trying to be harmful, but are only doing the house-keeping job they were made for.
They are nature's clean-up crew. One of these ants, scouting(搜索) in the grass, finds the trail of an injured beetle. In some mysterious way the news spreads. Soon there are two ants, then a few more. Then a dozen or more are running around the beetle. Enough ants will come to put an end to it.
Then the beetle is dead, the ants carry it away to their underground nests. They leave nothing in the grass but empty shell.
(1)、The ants that come to our picnics are having fun.
A：T
B：F
(2)、According to this passage, the black ants' job is to clean up the grass.
A：T
B：F
(3)、As soon as an ant finds an injured insect, it carries it away and eats it.
A：T
B：F
(4)、More ants learn about the beetle from other ants.
A：T
B：F
(5)、The ants clean the grass by carrying away everything but the shell.
A：T
B：F
Take Ladan and Laleh Bijani from Iran. They were identical twins who had spent their entire 29 years joined at the head. And yet, Ladan, the more outspoken of the pair, told journalists, "We are two completely separate individuals, we have different world views, We have different lifestyles, we think very differently about issues." Why did Ladan and Laleh have different personalities？
Self-organized systems in insects can provide us with some ideas. A colony of ants, for example, can be seen as a self-organized system. No supervisor tells the ants what to do, and yet all the jobs get done. The system works in such a way that if one ant carries out a particular job, it be comes less likely that another ant will attempt that job because it no longer needs doing. The result is what economists call "division of labor. "
Self-organization also produces division of labor in human groups. Each individual looks for something to specialize in, his or her own suitable position in the group. If one position is occupied, the individual will seek another. This process increases the differences even between identical twins, because once they've chosen different specialities, a circular mechanism causes small initial differences between them to widen.
Although identical twins look very much alike, people who know them well will distinguish between them. They might, for example, address more questions and comments to one twin than the other—perhaps by chance first. But the consequence is that the twin who is addressed more of ten will do more talking than the other twin, which will cause people who know them to address still more of their questions and comments to that twin. The result, over time, will be one outspoken twin and one quieter one—like Ladan and Laleh Bijani.
According to the writer we learn that identical twins______.
A．differ in personality
B．differ in appearance
C．have the same lifestyle
D．have the same outlook
Text 2
Identical twins are a perfect test case for theories of personality development. If a theory can' t explain the differences between identical twins, then it cannot explain environmental effects on per-sonality. Even identical twins brought up in the same home have different personalities.Take Ladan and Laleh Bijani from Iran. They were identical twins who had spent their entire 29 years joined at the head. And yet, Ladan, the more outspoken of the pair, told journalists,"We are two completely separate individuals. we have different world views,We have different lifestyles, we think very differently about issues. " Why did Ladan and Laleh have different person-alities？
Self-organized systems in insects can provide us with some ideas. A colony of ants, for exam-ple, can be seen as a self-organized system. No supervisor tells the ants what to do, and yet all the jobs get done. The system works in such a way that if one ant carries out a particular job, it be- comes less likely that another ant will attempt that job because it no longer needs doing. The result is what economists call "division of labor. "
Self-organization also produces division of labor in human groups. Each individual looks for something to specialize in, his or her own suitable position in the group. If one position is occu-pied, the individual will seek another. This process increases the differences even between identical twins, because once they' ve chosen different specialities, a circular mechanism causes small initial differences between them to widen.
Although identical twins look very much alike, people who know them well will distinguish between them. They might ,for example, address more questions and comments to one twin than the other-perhaps by chance first. But the consequence is that the twin who is addressed more often will do more talking than the other twin, which will cause people who know them to address still more of their questions and comments to that twm. The result, over time, will be one outspo-ken twin and one quieter one-like Ladan and Laleh Bijani.
51. According to the writer we learn that identical twins_________
[ A] differ in personality
[B] differ in appearance
[C] have the same lifestyle
[D] have the same outlook
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