問題詳情

3. In the winter time, it is very common to see people killed by invisible gases due to themishandling of their heater.
(A) invalid
(B) jointly
(C) hidden
(D) dangerous 

參考答案

答案:C
難度:適中0.515152
統計:A(6),B(7),C(34),D(16),E(0)

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