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问题 单项选择题

疾病预防控制机构、接种单位要按照（）的要求，做好扩大国家免疫规划疫苗的储存、运输、使用各环节的监督和管理工作。

A、疫苗储存和运输管理规范

B、疫苗流通和预防接种管理条例

C、预防接种工作规范

D、传染病防治法

答案

参考答案：A

判断题

如图所示，驾驶机动车在这样的狭窄路段会车，驾驶人应当减速靠右并保持安全横向距离。
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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.

17（）

A.development

B.origin

C.consequence

D.instrument
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