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    精英家教网 > 高中英语 > 题目详情

    根据课文填空

    Water had also appeared on other planets like Mars but,   1 the earth,it had  2  later. It was not immediately obvious  3 water was to be   4 to the development of life.    5 many scientists believe is that the continued   6   of water allowed the earth to dissolve  7 gases and acids into the oceans and seas. This produced a    8 reaction,  9  made  10  possible for life to develop.

     

    【答案】

     unlike

     disappeared

     that

     fundamental

     what

     presence

     harmful

     chain

     which

     it

    【解析】略

     

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