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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.
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    根据n多题专家分析,试题“根据课文填空Water had also appeared on other planets like Mars but, 1the earth,it had 2later. It was not immediately obvious 3 water was to be 4to the developme…”主要考查了你对  【单词、词组】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。