unit 1 a land of diversity language points课时作业

I. 单项填空

1. (2017·天津) I sent letters to everyone I knew, telling them about my project. It worked perfectly. Donations began in from hundreds of people.

　A. breaking B. flooding C. jumping D. stepping

【答案】B

【解析】根据上文It worked perfectly可知，捐款从几百人那里涌入。break in 闯入；flood in 大量涌入；jump in 跳进；step in 步入。故选B。

2. (2017·天津) The hospital has recently obtained new medical equipment, ___________ more patients to be treated.

A. being allowed B. allowing

　C. having allowed D. allowed

【答案】B

3. (2017·北京) Many airlines now allow passengers to print their boarding passes online ___________ their valuable time.

　A. save B. saving

　C. to save D. saved

【答案】C

【解析】句意：为了节省乘客的时间，许多航空公司现在允许他们网上打印登机牌。此处是动词不定式表目的，故选C。

4. (2015·浙江) If steel is heavier than water, why are ships able to __ on the sea?

　A. float B. drown C. shrink D. split

【答案】A

【解析】句意：如果铁重于水，那么为什么船可以浮在水面上？float漂浮；drown淹死；shrink收缩；split洒出。