In which of the following ways does the performance of tasks in naked mole rat colonies differ from task performance in eusocial insect societies? ______
A. In naked mole rat colonies, all tasks are performed cooperatively.
B. In eusocial insect societies, reproduction is limited to a single female.
C. In naked mole rat colonies, breeding is limited to the largest animals.
D. In naked mole rat colonies, the performance of tasks is less rigidly determined by body shape.
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第二节 完型填空
阅读下面短文,从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。
Every Saturday, Mr. Brown went the market to buy food and other things. He put【C1】______in a big basket. He was old and weak, so he always【C2】______a man to carry the basket home for him. But one Saturday, while he【C3】______home in front of the man with【C4】______, the man ran away【C5】______it. The next week, when Mr. Brown went to the market again , a friend of his said , "Look,【C6】______! That man took away your food last week ! " Mr. Brown at once ran behind a shop, and stayed there【C7】______the man left the market. His friend was very【C8】______, "Why did you do that. he asked. "Well, "said Mr. Brown, "that man was carrying my basket when he left me a week ago. He will want me to pay him for【C9】______, and that【C10】______me more than a basket full of food."
【C1】
A. it
B. them
C. that
第一节 单项填空
阅读下面的句子和对话,从[A]、[B]、[C]三个选项中选出一个能填入空白处的最佳选项。
What do you think the plan?
A. /
B. of
C. on
But, beyond the philosophical dimensions of global television communications there are some dramatic, political implications. Even before today's worldwide satellite links were possible, the growing effect of broadcast news technology on national and international politics was becoming increasingly evident.
Because television is a close-up medium and a medium that seems to most readily involve emotions, it is most effective when it is revealing the plights of people. It was probably the appalling footage of the Nazi death camps that first demonstrated the power of motion pictures and television to affect the collective consciousness of a world audience. In the United States during the 50's and 60's the power of television to stir the consciousness of large numbers of people was demonstrated in another way. Night after night graphic news footage of the civil rights struggle was brought into U.S. homes.
Years later, this role was to take on a new and even more controversial dimension during the Vietnam War. Reading about war was one thing; but war took on a deeper and more unsavory dimension when it was exported directly into U.S. living rooms night after night by television. Public opinion eventually turned against the war and to some measure against President Johnson who was associated with it. As a result of the public opinion backlash during these times, the Pentagon was thereafter much more careful to control what foreign correspondents and TV crews would be allowed to see and report.
It was during this time that President Carter brought the issue of human rights to the centre of his foreign policy, and, to some degree, to the centre of international politics. "Human rights are the soul of our foreign policy," Carter said. "Of all human rights the most basic is to be free of arbitrary violence, whether that violence comes from government, from terrorists, from criminals, or from self-appointed messiahs operating under the cover of politics or religion. "
Although political viewpoints have changed since then, because of the emotional nature of human rights, this has emerged as the "soul" of television news. The transgression of human rights has been the focus of many, if not most, major international television news stories. The reporting of these stories has created outrage in the world, prompted attempts at censorship by dictators, and in many cases resulted in the elimination of human rights abuses.
The passage is mainly about ______.
A. the evolution of international politics in the United States
B. the broadcast media's growing role in international politics
C. the concern for human rights as is shown in broadcast media
D. the impact of global television communication on viewers' emotions
A naked mole rat colony, like a beehive, wasp's nest, or termite mound, is ruled by its queen, or reproducing female. Other adult female mole rats neither ovulate nor breed. The queen is the largest member of the colony, and she maintains her breeding status through a mixture of behavioral and, presumably, chemical control. Queens have been long-lived in captivity, and when they die or are removed from a colony one sees violent fighting for breeding status among the larger remaining females, leading to a takeover by a new queen.
Eusocial insect societies have rigid caste systems, each insect's role being defined by its behavior, body shape, and physiology. In naked mole rat societies, on the other hand, differences in behavior. are related primarily to reproductive status (reproduction being limited to the queen and a few males), body size, and perhaps age. Smaller non-breeding members, both male and female, seem to participate primarily in gathering food, transporting nest material, and tunneling, larger non-breeders are active in defending the colony and perhaps in removing dirt from the tunnels. One work has suggested that differences in growth rates may influence the length of time that an individual performs a task, regardless of its age.
Cooperative breeding has evolved many times in vertebrates, but unlike naked mole rats, most cooperatively breeding vertebrates (except the wild dog, Lycaon pictus) are dominated by a pair of breeders rather than by a single breeding female. The division of labor within social groups is less pronounced among other vertebrates than among naked mole rats, colony size is much smaller, and mating by subordinate females may not be totally suppressed, whereas in naked mole rat colonies subordinate females are not sexually active, and many never breed.
Which of the following most accurately states the main idea of the passage?
A. Naked mole rat colonies exhibit social organization based on a rigid caste system.
Behavior. in naked mole rat colonies may well be a close vertebrate analogue to behavior. in eusocial insect societies.
C. The mating habits of naked mole rats differ from those of any other vertebrate species.
D. Naked mole rat colonies are the only known examples of cooperatively breeding vertebrate societies.