問題詳情

20. ______ joint, the knee is among the most frequently injured.
(A) Being a weight-bearing
(B) Being a weight-born
(C) For been a weight-bearing
(D) For being a weight-born

參考答案

答案：A
難度：適中0.5
統計：A(11),B(3),C(1),D(2),E(0)