問題詳情

29. A radio medical advice service _____ ships of all nationalities and no charge is made forthis service.
(A)is attributable for
(B)is available for
(C) is vulnerable for
(D) is considerable for

參考答案

答案：B
難度：適中0.6875
統計：A(2),B(22),C(5),D(1),E(0)