题目内容

3. The Yellow River       flood large areas,but now the water of it is used to       energy.

   A. was used to;producing   B. used to;producing

   C. was used to;produce   D. used to;produce

3. D

句意:黄河过去常常淹没大片地区，但是现在黄河水被用来产生能量。

used to do sth.意为“过去常做某事”；be used to do sth.意为“被用来做某事”。故选D.

练习册系列答案
相关题目

4. 一That mountain in Guilin       an elephant.

——So it does. It’s amazing!

   A. looks up   B. looks like

   C. looks for   D. looks after

1. My father took me for       (旅行) on the sea.

2. What       (发生) when the woman got older?

3. He always stays in bed       lunchtime.

4. It seemed only seconds       the boy finished washing his face.


1. 你最喜欢的爱好      

2. 和一群朋友一起      

3. We always disagree with one another.

   A. each other   B. other

   C. others   D. the other

44. A lot of fans r        to the singer on the stage just now.

45. The country road is too n        for the truck to drive past.

4. The boy used to smoke.(改为否定句) 

The boy             to smoke.


1. Thanks for your help.

             for your help.

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网