問題詳情

47.Hand soaps ________ in restrooms in public venues have been found to contain exceedingly high numbers of viable bacteria.
(A) provide
(B) providing
(C) are provided
(D) provided

參考答案

答案：D
難度：適中0.435897
統計：A(1),B(5),C(15),D(17),E(0)