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问题 单项选择题

在感染性休克的发病中，微生物及其毒素和胞壁的组成部分激活机体的潜在反应系统，下列哪项是错误的

A.细胞系统(包括单核吞噬细胞系统等)

B.交感一肾上腺皮质系统

C.补体系统

D.激肽系统

E.凝血系统

答案

参考答案：B

单项选择题

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (54) an educational institution, and they are required to study for a (55) of fifteen hours a week on a daytime course. Prospective students have to show that they can afford their studies, and that they have sufficient (56) resources to support themselves (57) in this country.

In order to work here the foreigner needs a work permit, (58) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (59) these permits, and there is little that can be done (60) it; it would be extremely unwise for a foreign visitor to work (61) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the European countries, who are often given (62) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (63) part-time jobs while they are studying here.

57().

A.after 

B.since 

C.while 

D.before
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判断题

金元明时期是炮制理论的形成时期。
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