【題目】Researchers are now conducting hibernation experiments and can use chemicals to put living cells into sleep-like state they don’t age.

A. for which B. that

C. where D. which

【答案】C

【解析】試題分析：考查定語從句及其關(guān)系詞的使用。句意：研究人員現(xiàn)在正在作冬眠實驗，他們可以使用化學藥物使活著的細胞進入睡眠狀態(tài)，在這個狀態(tài)中他們不會變老。先行詞為state, 在從句中作地點狀語，故C正確。

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