试题与答案

脑底动脉环在脑循环中起非常重要的作用,能沟通脑前、后、左、右的血液供应,下列哪条动脉

题型:单项选择题

题目:

脑底动脉环在脑循环中起非常重要的作用,能沟通脑前、后、左、右的血液供应,下列哪条动脉不参与脑底动脉环的组成()

A.前交通动脉

B.大脑前动脉

C.颈内动脉

D.大脑后动脉

E.椎动脉

答案:

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参考答案:A解析:WHO规定的国际监测传染病是疟疾、流感、脊髓灰质炎、流行性斑疹伤寒、回归热。

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题型:阅读理解

On the River Thames there are a number of boat races every year and these have become very popular with the public. Perhaps the best–known of these races is the University Boat Race. This takes place just before Easter every year and is a competition between teams from the Universities of Oxford and Cambridge. They row from Putney to Mertlake, a distance of about four and a quarter miles. This race has been taking place almost every year since 1829.

小题1: The best – known of these races is __________.

A.the Boat Race of the University of Oxford.

B.the Boat Race of the University of Cambridge

C.the Boat Race of the Olympic Games

D.the University Boat Race小题2: Generally, the Boat Race takes place _________.

A.once a year

B.twice a year

C.every three years

D.every other year小题3: The words “Putney” and “Mertlake” are _________.

A.names of places

B.names of teams

C.names of boat races

D.names of universities

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