单选题：Melting of snow and ice enables sunlight to reach __________

题目分类：理工类
题目类型：单选题
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题目内容：

Melting of snow and ice enables sunlight to reach __________ A．the exposed ground
B．a very long time
C．the extra heat
D．recorded history
E．previously published studies
F．rapid exaggeration of impacts

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答案解析：

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