B

　　If you go into the forest with friends, stay with them always.If you don�餿, you may get lost.If you really get lost, this is what you should do.Sit down and stay where you are.Don�餿 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 by shouting or whistling three times.Stop.Then shout or whistle three times.Any signal given three times is a call for help.

　　Keep up the 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 will give two shouts, two whistles or two gun shots.When someone gives a signal, it is an answer to a call for help.

　　If you don�餿 think that you will get help before night comes, try to make a little house�瞔over up the holes with branches and 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 branch house to look for a river.Don�餿 just walk away.Pick off 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—stay in one place.

　　() 41.If you get lost in the forest, you should .

　　A.stay where you are and give a signal three times

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

　　C.try to find your friends as soon as possible

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

　　() 42.If you want to let people believe that you are not just making noise for fun you should

　　.

　　A.shout that you are lost

　　B.keep up the shouting or whistling always three times together

　　C.shout at the top of your voice

　　D.shout or whistle once in a while

　　() 43.When you hear shouts or whistles or gun shots, you know that .

　　A.two; people will soon come to help you

　　B.three; some one is asking for help

　　C.three; people will soon come to help you

　　D.two; someone is asking for help

　　() 44.When you are lost in the forest, but you want to leave your place to get water, you should .

　　A.just go to the river

　　B.find a bowl or a glass, and then go

　　C.make a fire so that you might make yourself some hot tea

　　D.leave marks as you go to the river so that you can find your way back

　　() 45.This story mainly tells you .

　　A.that when someone gives a signal always three times, it is a call for help

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

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

　　D.that when someone makes a fire, it is a call for help