Chinese and Russian scientists have reposed that in places______stress is building up, the radon levels of the water build up to

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问题 Chinese and Russian scientists have reposed that in places______stress is building up, the radon levels of the water build up too.

选项 A、what
B、that
C、which
D、where

答案D

解析 中俄科学家报告指出凡是气压增大的地方,水中氡含量也会增大。where引导定语从句修饰places。
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