How many Earths could fit inside the Sun? Earth would not have developed without ______ .

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问题 How many Earths could fit inside the Sun?
Earth would not have developed without ______ .

选项 A、water
B、fertilizer
C、soil
D、the Sun

答案D

解析 根据题干信息词developed without定位到第一个小标题下的倒数第二段末句Life on Earth could not exist without the Sun,and the planet itself would not have developed without it,根据文章表述,如果没有太阳,地球上的生命将不会存在,地球本身也不会发展到现在,太阳是地球存在发展的条件,题干中的 Earth即指原文中的the planet itself,故本题选D。
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