The passage supports which of the following inferences about breeding among Lycaon pictus？
A. The largest female in the social group does not maintain reproductive status by means of behavioral control.
B. An individual’s ability to breed is related primarily to its rate of growth.
C. Breeding is the only task performed by the breeding female.
D. Breeding in the social group is not cooperative.
E. Breeding is not dominated by a single pair of dogs.
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According to the passage, which of the following is a supposition rather than a fact concerning the queen in a naked mole rat colony？
A. She is the largest member of the colony.
B. She exerts chemical control over the colony.
C. She mates with more than one male.
D. She attains her status through aggression.
E. She is the only breeding female.
流行病学主要研究的问题是
A. 疾病分布及影响分布的因素
B. 疾病韵病因
C. 疾病的防治措施
D. 流行病研究方法
E. 以上均是
The author implies tha5t which of the following will occur if textbooks are not carefully
A. Children will remain ignorant of the European settlers’ conquest of the New World.
B. Children will lose their ability to recognize biases in textbooks.
Children will form. negative stereotypes of Native Americans.
D. Children will develop an understanding of ethnocentrism.
E. Children will stop taking textbooks seriously.
One function of the third paragraph of the passage is to______
A. state a conclusion about facts presented in an earlier paragraph
B. introduce information that is contradicted by information in the fourth paragraph
C. qualify the extent to which two previously mentioned groups might be similar
D. show the chain of reasoning that led to the conclusions of a specific study
E. demonstrate that, of three explanatory factors offered, two may be of equal significance
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