Unit 2 The Olympic Games reading课时作业

Ⅰ.单项填空

1．_____ carefully if any change occurs when doing experiments in the lab.

A．Observe B．To observe

C．Observed D．Observing

答案　A

解析　考查祈使句。句意为：在实验室里做实验时，一定要仔细观察有无变化发生。句中if引导宾语从句，设空处为主句动词，且表示祈使语气，故用动词原形，构成祈使句。此处并非作状语，故非谓语动词形式不符合句法结构。

2．Cao Wenxuan became the winner of the 2016 Hans Christian Andersen Award，whichh is the highest international _______ given to an author of children' s books.

A．competition B．convention

C．recognition D．regulation

答案　C

解析　句意为：曹文轩获得2016年国际安徒生奖，这个奖项给予了儿童文学作家最高的国际认可。competition比赛，竞赛；convention习俗，常规，惯例；recognition承认，认可；regulation章程，规章制度，规则。

3．When the earthquake happened in Sichuan，to protect students many teachers would lose their lives _________ escape first.

A．rather than B．more than

C．other than D．less than

答案　A

解析　考查短语辨析。Rather than而不是；more than超过；other than除了；less than少于。根据句意"当四川大地震发生时，为了保护学生，许多老师宁愿失去生命而不是先逃离。"可知A项正确。

4．Those who suffer from headache will find they get ________ from this medicine.

A．relief B．safety

C．defense D．shelter

答案　A

解析　句意为：那些头痛患者会发现这种药缓解疼痛。relief缓解，减轻；safety安全；defense保护；shelter庇护。根据句意可知应选A项。