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

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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大学英语四级

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