北语17春《大学英语》(三)作业3答案

17春《大学英语》（三）作业3

一、单选题（共 20 道试题，共 100 分。）

1. In a time of social reform, people’s state of mind tends to keep ___ with the rapid changes of society.

A. step

B. pace

C. touch

D. progress

正确答案：B

2. The way we picture ourselves is often the way we turn ___.

A. from

B. out

C. up

D. into

正确答案：B

3. Harry was ___ by a bee when he was collecting the honey.

A. scratched

B. bitten

C. stuck

D. stung

正确答案：D

4. The tomato juice left brown ___ on the front of my jacket.

A. track

B. trace