题目内容：

If you get into the forest with your friends, stay with them always. If you don’t, you may get lost. If you really get lost, this is what you should do. Sit down and stay where you are. Don’t try to find your friends—let them find you by staying in one place.

There is another way to help your friends or other nearby people to find you. Give them a signal(信号)by shouting or whistling(吹口哨)three times. Any signal given three times is a call for help. Keep up shouting or whistling always three times together. When people hear you, they will know that you are not just making noise for fun. They will let you know that they have heard your signal. They give you two shouts, two whistles, or two gunshots(枪声). When someone gives you a signal, it is an answer to a call for help.

If you don’t think that you will get help before night comes, try to make a little house—cover up the holes with branches(树枝)with lots of leaves. Make yourself a soft bed with leaves and grass.

What should you do if you get hungry or need drinking water? You would have to leave your little house to look for a river. Don’t just walk away. Pick off(去除)small branches and drop them as you walk so that you can find your way back. The most important thing to do when you are lost is to stay in one place.

1.If you are lost in the forest, you should______.

A. stay where you are and give signals three times

B. walk around the forest and shout so that your friends could hear you

C. try to find your friends as soon as possible

D. try to get out of the forest and shout for help

2.When you hear two shouts, two whistles, two gunshots, ______        .

A. you should shout more loudly

B. you can whistle three times

C. it is an answer to your call for help

D. you should try to run to them

3.When you want to leave your place to get drinking water, you should ______  .

A. just go to the river

B. find some glasses or bottles before you go

C. make a fire so that you can have some tea

D. leave marks so that you can find your way back

4.This passage mainly tells you______.

A. when you hear a signal always three times, it is a call for help

B. what you should do if you get lost in a forest

C. any signal given twice means an answer to a call for help

D. how you can live longer in a forest