1. This is not an economical way to get more water; ______, it is very expensive.

A) on the other hand B) on the contrary C) in short D) or else

　
　
2. It was the first time that such a ______had to be taken at a British nuclear power station.

A) presentation B) precaution C) preparation D) prediction
　

3. ______ that he wasn't happy with the arrangements, I tried to book a different hotel.

A) Perceiving B) Penetrating C) Puzzling D) Preserving
　
　
4. The board of the company has decided to ______ its operations to include all aspects of the clothing business.

A) multiply B) lengthen C) expand D) stretch
　
　
5. His business was very successful, but it was at the ______ of his family life.

A) consumption B) credit C) exhaustion D) expense

以下为回复可见内容

1.B

要得到更多的水，这不是一个经济的途径；恰恰相反，这个办法非常昂贵。

A) on the other hand另一方面..，

B) on the contrary正相反

C) in short总之

D) or else否则;要不然。

2.B

这是头一回不得不在英国核电站采取这样的预防措施

A) presentation赠送;授予

B) precaution预防措施

C) preparation准备,预备，(具体的)准备工作,准备措施[C]

D) prediction预言;预报[C]

3.A

察觉到他对安排不满意，我试图去预定另一家酒店。

A) perceive察觉;感知，意识到；

B) penetrate，穿过;刺入;透过，看透;识破；

C) puzzle使迷惑;使为难,使窘困；

D) preserve保存,保藏;防腐[(+from)]，保护;维护;维持

4.C

公司董事会已经决定将其运营活动扩展到服装业的所有领域。

A) multiply 乘,使相乘[(+by/together)]，使(成倍地)增加，使繁殖；

B) lengthen使加长,使延长；

C) expand展开,张开(帆,翅等)，扩大;扩充;发展

D) stretch伸直;伸出;伸长[(+out)]，拉直;拉紧;拉长;撑大。

5. D

他的事业非常成功，但这是以他的家庭生活为代价的。

A) consumption 消耗;用尽，消费；

B) credit赊欠，信用,信赖]，荣誉,赞扬,功劳[(+for/to)]；

C) exhaustion耗尽;枯竭;精疲力竭

D) expense 开支;经费，牺牲;损失,代价at the expense of 以…为代价。