問題詳情

42. According to the Big Bang theory, how old is the universe?
(A)Under 14 billion years.
(B) About 15 billion years.
(C)Between 16 and 19 billion years.
(D)About 20 billion years.

參考答案

答案:B
難度:適中0.6
統計:A(0),B(3),C(1),D(1),E(0)

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