問題詳情
16.The author suggests that astronomers consider the study of cosmic jets to be
(A)an obsolete scientific field
(B)an unprofitable venture
(C)an intriguing challenge
(D)a subjective debate
(A)an obsolete scientific field
(B)an unprofitable venture
(C)an intriguing challenge
(D)a subjective debate
參考答案
答案：C
難度：非常簡單1
統計：A(0),B(0),C(2),D(0),E(0)
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