选择正确的答案 Man as been to the moon .It has been the first step

选择正确的答案 Man as been to the moon .It has been the first step to the
Man as been to the moon .It has been the first step to the future travels in space .The moon is much nearer to the earth than all the planets .Venus ( 金 星 ),the nearest planet to the earth is millions of kilometers away Traveling to the planets will be man’s next step .It will be more difficult than traveling to the moon and certainly more exciting ,In 1997,an American spacesjip reached nearest planet from the earth .A wonderful robot slowly walked on the planet and worked hard .It sent a lot of information back to the earth .The most exciting piece was thart there used to be a lot of water on Mars .The American scientists ased ,“Is there any life on Mars ” Unluckily ,no life was found there ,but American scientists do not lose heart ,they still keep on trying .Russian spaceships have found that it is so hot on Venus that there must be no life there .Spaceships of the future will be bigger and faster .They will be able to carry people for travels to the moon or other planets .Man may in the future find planets like the earth and make them home .But there is still a long,long way to go .Man should learn to know that the earth will be his only home for a long time and begin to love and take good care of it ..（）1.The first step to the future travels in space is the （）A.travel to MarsB.travel to the moonC.travel to VenusD.travel to the sun（）2.（）The nearest planet to the earth is A.VenusB.MarsC.the moonD.Jupiter

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B

A


再问： ����3.The American scientists����find living thngs on Mars A.believe they can B.are sure to C.try toDdon��t think they can
再答： A
再问： ����4.There must must be no life on Venus because ����A.it is too cold B.there is no water C.it is too hot D.there is no air
再答： C
再问： ����5.It will be possible for people to travel to the moon or other planets in the future because spaceship ����A.will be bigger B.will be faster C.Both A and BD.Neither A nor B
再答： C