問題詳情

5. According to the World Health Organization, an Ebola epidemic________ can be declared over once 42 days have passed and no new cases have been detected.
(A) breakout
(B)outbreak
(C)breaking out
(D)broken out

參考答案

答案:A
難度:困難0.352941
統計:A(12),B(13),C(4),D(1),E(0)

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