单选题When you walk in a busy street, you should walk on the side _____.Awhere the wind is comingBwhere the wind is goingCwhere the wind is weakerDwhere the wind is stronger
单选题
When you walk in a busy street, you should walk on the side _____.
A
where the wind is coming
B
where the wind is going
C
where the wind is weaker
D
where the wind is stronger
参考解析
解析：
第二段第五句：在街上走的时候要走在迎风的一边，因为迎风一边的空气中污染物要比顺风的一边少一半。
第二段第五句：在街上走的时候要走在迎风的一边，因为迎风一边的空气中污染物要比顺风的一边少一半。
相关考题：
Once you () with the asmission office, you become a student of this school. A.join inB.enroll inC.walk inD.sit in
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If you go into the forests with friends，stay with them． If you don't，you may get lost．If you do 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． You can help them to find you by staying in one place．There is another way to help your friends or other people to find you． Give them a signal (信号) by shouting or whistling(吹口哨) three times． Stop． Then shout or whistle three times again． Any signal given three times is a call for help．Keep on shouting or whistling，always three times'together． When people hear you，they will give two shouts or two whistles． When a signal is given twice，it is an answer to a call for help．lf you don-t think that you will get help before night comes，try to make a small room with branches(树枝)．What should you do if you get hungry or need to drink water? You would have to leave your little branch room to look for something to eat and drink． Don't just walk away． Drop small branches as you walk so that you can find your way back．The most important thing to do when you are lost-stay in one place．( )16． If you get lost in the forests，you should walk everywhere to find your friends as soon as possible．
20． You can find your way back to your branch room easily without leaving any branches as you walk．
共用题干Musical ChairsDo you know how to play a game called"Musical Chairs"?It is easy to play and most people enjoy it. All you need are some chairs,some people and some way of making music.You may use a piano or any other musical instrument,if someone can play it. You may use a tape recorder. You can even use a radio.Put the chairs in a row.The chairs may be put in twos,back to back.A better way is to have the chairs in one row with each chair facing in the opposite direction to the chair next to it.The game is easy.When the music starts,the players walk round the chairs.Everyone goes in the same direction,of course,they should walk in time to the music .If the music is fast they should walk quickly .If the music is slow,they should walk slowly.The person playing music cannot see the people in the game.When the music stops,the play-ers try to sit on the chairs.If a person cannot find a chair to sit on,he drops out. Then,before the music starts again,one chair must be taken away.When the music stops again,one more player will be out.At last,there will be two players and one chair. The one who sits on the chair when the music stops is the winner. The chairs should be put______.A: with the desksB: before the winnerC: all over the roomD: in a line
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单选题While waiting to cross a busy street, you should _____.Await a few seconds until the fumes reduceBstay away from the traffic as far as possibleChold your breath until you get to the other side of the streetDcount down for the light to change
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