We have long speculated that if there are other warm, wet and cozy planets like ours, they might ______ carbon-based life like o

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问题 We have long speculated that if there are other warm, wet and cozy planets like ours, they might ______ carbon-based life like ours.

选项 A、harbor
B、labor
C、monitor
D、toil

答案A

解析 A选项的名词 harbor 作为及物动词用,意指“包含”、“聚藏”、“怀有”。
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