英语问题2，快！

1. Sorry to broke your window. Oh, really? ___.

A. It’s OK with me
B. It doesn’t matter
C. Don’t be sorry
D. I don’t care

2. Researchers have found that REM (rapid eye movement) sleep is important to human beings. There are physical changes in the body to show that a person has changed from NREM (non-rapid eye movement) to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body is a very important characteristic of REM sleep. The subject of this paragraph is ___.

A. why people sleep
B. the human need for REM sleep
C. the characteristic of REM sleep
D. physical changes in the human body

3. ___ helping a child in danger on the street, he was knocked down by a car.

A. By
B. During
C. At
D. While

1. B

2. C

3. D

1.B （对于道歉，通常用 It doesn’t matter.回答。）

2.B （该段落首先介绍REM的存在，然后主要内容都是在介绍REM的必要性。）

3.D （while引导的时间状语从句。）

1.B

2.C

3.B

B. It doesn’t matter

B. the human need for REM sleep D. While