第二单元过关检测

Ⅰ.单项选择

1. Since nobody gave him any help,he　　　 have done the research on his own.

A.can B.must

C.would D.need

解析:句意:既然没有人给他任何帮助,那他一定是独自完成的这项研究。must在此处表示对过去情况的肯定猜测。can和need与have done连用,一般不能用于肯定句中表推测;would与have done连用,表示虚拟语气。

答案:B

2. It will be a big help if you go to the store and get what we need for dinner.　　　,I'll set the table.

A.As a result

B.On the whole

C.In the meanwhile

D.As a matter of fact

解析:句意:如果你去商店买一些我们晚饭所需的东西可真是帮了大忙了,同时我也会摆桌子(准备开饭)。as a result"结果";on the whole"总的来说";in the meanwhile"同时";as a matter of fact"实际上"。根据句意可知C项正确。

答案:C

3. There's no way of knowing why one man makes an important discovery 　　　another man,also intelligent,fails.

A.since B.if

C.as D.while

解析:句意:很难理解为什么一个人会做出一项重要的发现而另一个同样很聪明的人却没有。since "自从,既然";if "如果";as "就像......";while 并列连词,表示"然而"。

答案:D

4. In the global economy,a new drug for cancer,　　　 it is discovered,will create many economic possibilities around the world.

A.whatever B.whoever

C.wherever D.whichever

解析:句意:在全球经济中,一种新的治疗癌症的药物,无论它是在哪里被发现的,将在世界各地创造很多经济机会。whatever "无论什么";whoever "无论是谁";wherever "无论在哪里";whichever "无论哪一个"。

答案:C

5. Shortly after suffering from a massive earthquake and 　　　 to ruins,the city took on a new look.

A.reducing B.reduced

C.being reduced D.having reduced

解析:句意:在遭受大地震变成废墟后不久,这个城市呈现出新的面貌。分析句子结构可知,所缺成分在介词after后面作宾语,应用动名词形式,排除B项;reduce在此处意为"使变为",应用被动形式,排除A项和D项。