問題詳情
38. Small sailboats can easily turn over in the water ______ they are not managed carefully.
(A). though
(B). before
(C). until
(D). if
(A). though
(B). before
(C). until
(D). if
參考答案
答案:D
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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