問題詳情

35. A black hole is a region of space ________ the pull of gravity is sostrong that nothing can escape.
(A) where
(B) whereas
(C) which
(D) what

參考答案

答案:A
難度:簡單0.751637
統計:A(1952),B(91),C(418),D(136),E(0)

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