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问题 单项选择题 A1/A2型题

以下关于肝首关效应的表述错误的是（）

A.有首关效应的药物生物利用度低

B.肝摄取率介于0～1

C.肝摄取率是药物通过肝脏从门静脉血中被清除的分数

D.首关效应影响药物的吸收速度和程度

E.肝摄取率介于1～100

答案

参考答案：E

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 (52) an educational institution, and they are required to study for a minimum of fifteen hours a week on a (53) course. Prospective students have to show that they can afford their studies, and that they have sufficient (54) resources to support themselves (55) in this country.

In order to work here the foreigner needs a work permit, (56) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (57) these permits, and there is little that can be done (58) it; it would be extremely unwise for a foreign visitor to work (59) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the Common Market countries, who are often given (60) 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 (61) part-time jobs while they are studying here.

55().

A.after 

B.but 

C.while 

D.before
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多项选择题

广告监督管理的作用表现在（）。

A.顺应了经济发展和社会主义精神文明建设需要

B.直接维护了国家利益

C.直接维护了公众利益

D.直接维护了消费者合法权益

E.直接促进了广告行业的繁荣发展
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