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问题 选择题

作为一个时期的名称，战国因战争众多、争夺激烈而得名。战国时期是指[ ]

A．约公元前21世纪——约公元前16世纪

B．约公元前16世纪——约公元前11世纪

C．公元前770年——公元前476年

D．公元前475年——公元前221年

答案

答案：D

多项选择题

关于右旋糖酐-70正确的描述是

A．右旋糖酐-70扩充血容量，维持血压作用最强

B．具有渗透性利尿作用

C．可预防休克后期弥漫性血管内凝血

D．禁用于血小板减少症及出血性疾病

E．心功能不全的病人慎用
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单项选择题

The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name. But Gregory Cochran is (1) to say it anyway. He is that (2) bird, a scientist who works independently (3) any institution. He helped popularize the idea that some diseases not (4) thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.

(5) he, however, might tremble at the (6) of what he is about to do. Together with another two scientists, he is publishing a paper which not only (7) that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in (8) are a particular people originated from central Europe. The process is natural selection.

This group generally do well in IQ test, (9) 12-15 points above the (10) value of 100, and have contributed (11) to the intellectual and cultural life of the West, as the (12) of their elites, including several world-renowned scientists, (13) . They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, (14) , have previously been thought unrelated. The former has been (15) to social effects, such as a p tradition of (16) education. The latter was seen as a (an) (17) of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately (18) . His argument is that the unusual history of these people has (19) them to unique evolutionary pressures that have resulted in this (20) state of affairs.

12（）

A.missions

B.fortunes

C.interests

D.careers
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