题目内容：

Nothing is more frustrating than not being able to sleep, tossing and turning （翻来覆去）. Your mind is racing, going over everything that happened that day. Night noises keep you awake. What can you do? Here are some things you can do to help you to fall asleep.

Sleep only when sleepy

This reduces the time you are awake in bed.

If you can’t fall asleep within 20 minutes, get up and do something boring until you feel sleepy.

Don’t expose yourself to bright light while you are up. The light tells your brain that it is time to wake up.

Don’t take naps

This will ensure that you are tired at bedtime. If you just can’t make it through the day without a nap, sleep less than one hour, and take a nap before 3 p.m.

Get up and go to bed at the same time every day

Even on weekends! When your sleep cycle has a regular rhythm, you will feel better.

Regular exercise can help you sleep well, but the time to do exercise is important. Exercising in the morning or early afternoon will not interfere (干扰) with sleep.

Have a snack before bedtime

If your stomach is too empty, that can interfere with sleep. However, if you eat a heavy meal before bedtime, that can interfere as well. Have a warm glass of milk.

Take a hot bath 90 minutes before bedtime

A hot bath will raise your body temperature, but it is the drop in body temperature that may make you feel sleepy.

1._______ can help you fall asleep at night.

A．Reading an uninteresting story

B．Thinking over what happened during the day

C．Sitting quietly with the light on

D．Taking some exercise

2.Which of the following is NOT true according to the passage?

A．You should follow the routine even on weekends.

B．Go to bed right after you take a hot bath.

C．The time to take exercise is important.

D．Don’t take a long nap even though you are very sleepy.

3.According to the passage, one had better not take naps _______.

A．when they have many things to do

B．before 3 p.m

C．for over one hour

D．when they are tired

4.What can we infer from the passage?

A．A regular sleep cycle will make you feel better.

B．Taking exercise now and then can help you sleep well.

C．Have a little food when you feel very hungry before bedtime.

D．The drop in your body temperature makes you feel sleepy.