Scientists employ many modern techniques to ______ the origin of the world.A、wat

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问题 Scientists employ many modern techniques to ______ the origin of the world.

选项 A、watch
B、grasp
C、treat
D、probe

答案 D

解析难词辨析。原句意为，科学家们运用了很多现代化的技术来探查世界的起源。故选probe调查，探查。

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