Without the sun’ s light______the earth’ s surface, no life could exist on the earth.

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问题 Without the sun’ s light______the earth’ s surface, no life could exist on the earth.

选项 A、warms
B、warmed
C、warming
D、to warm

答案D

解析 本题考查动词不定式作定语。根据句意,此时名词light后应加不定式作定语,说明light的内容,故D正确。
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