The description of "overfilling your gas tank" shows why__________.

A．one should take as many vitamins as possible

B．more than enough vitamins are unnecessary

C．vitamins cost as much as gas

D．doctors recommend allowance of vitamins

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参考答案

答案解析

逻辑推断题。第四段有这样一句话，But taking more than the body needs doesn’t make it function better，just as overfilling your gas tank doesn’t make your car run faster，后面半句是比喻，是对前面进一步说明，与8选项“超过足够量的维他命是没有必要的”是一样的意思，故答案选B。

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1 A good title for this article would be__________.

A．Tips of Losing Weight Effectively

B．Test Your Nutrition IQ

C．Nutrition .．A Complex Branch of Science

D．Misleading Nutrition Concepts

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2 根据下面资料，回答题
In Lusaka, Zambia, a young man applying for a job was told to see the manager．He leaned over the receptionist´s desk and asked．"What tribe(部落) is he?" When the recep-tionist told him that the manager was a Mashona, the applicant replied , "Then I´ll never get the job．"
This phenomenon is called tribalism(部落主义)．There are more than 2,000 tribes in black Africa．Each has its own language, customs, and physical characteristics that make its members almost immediately recognizable to a person from another tribe．To the Wester-ner,tribalism is one of the most difficult of African customs to understand．It makes many people think of savagery, warfare, or old-fashioned customs.
However, to most Africans, tribalism simply means very strong loyalty to one´s ethnic group．It is a force that can be both good and bad．By definition tribalism means sharing among members of the extended family．It makes sure that a person is taken care of by his own group tribesman．To give a job to a fellow is not wrong； it is an obligation．Similarly,for a politician or military leader, it is considered good common sense to choose his closest advisers from people of his own tribe．This ensures security, continuity, and authority．Trib-al loyalty may mean a quick promotion--from sergeant to captain, from clerk to manager--within a very short time.
Tribalism remains perhaps the most powerful force in day-to-day African life．Yet mod-ern African politicians publicly speak out against tribal divisions.
In paragraph 1,why did the young man believe his job application will be refused?

A．His behavior was not appropriate.

B．He belonged to the same tribe with the manager.

C．He didn't belong to the same tribe with the manager.

D．His questions annoyed the receptionist.

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3 The situation in the first paragraph is an example of__________.

A．the difficulty of getting a job in Africa

B．the disagreement on tribalism among Africans

C．the great numbers of tribes in Africa

D．the importance of tribalism in Africa

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