Unit 3 Inventors and inventions Using language课时作业

　　一、打牢语言基础，基稳才能楼高

　　[单元语言点综合练习]

　　Ⅰ.单项填空

　　1．He was very shy and had never ________ the art of public speaking.

　　A．caught　　　　　　　　 B．hired

　　C．removed D．mastered

　　解析：选D　句意：他很腼腆，一直没有掌握公共场合讲话的艺术。master"精通，掌握"，符合句意。catch"捉住"；hire"租用"；remove"去除"。

　　2．The ________ look on the girl's face showed that she was greatly terrified at the ________ news.

　　A．terrified; terrifying B．terrified; terrified

　　C．terrifying; terrifying D．terrifying; terrified

　　解析：选A　terrified修饰人或与人有关的声音、表情等，意为"(人)感到恐惧的"，而terrifying通常修饰物，意为"令人惊恐的"。

　　3．Sam managed to keep in ________ contact with his family while he was working in New Zealand.

　　A．pleasant B．confident

　　C．constant D．different

　　解析：选C　句意：萨姆在新西兰工作期间尽量与家人保持密切的联系。pleasant"令人愉快的，亲切的"；confident"有信心的，有把握的"；constant"经常的，不断的"；different"不同的"。

　　4．You look so tired tonight. It is time you ________.

　　A．go to sleep B．went to sleep

　　C．go to bed D．went to bed

　　解析：选D　"It is (high/about) time＋that从句"意为"该做......的时间了"，从句应用虚拟语气：谓语动词用过去式或"should＋动词原形"，故选D。go to sleep的意思是"入睡，睡着"，与语境不符。

　　5．The headmaster asked me to give a short ________ on my teaching plan.

　　A．show B．exhibition

　　C．arrangement D．presentation

解析：选D　句意：校长要求我对我的教案做一个简单的展示。由语境可知应该是"做一个简单的展示(presentation)"。show"演出，表演"；exhibition"展览"；arrangement"安排"。