問題詳情

450. Flying economy on a long-haul flight, I had to leave my seat from time to time to stretch my leg and avoid muscle _____.
(A) strain
(B) drain
(C) train
(D) refrain

參考答案

答案：A
難度：簡單0.774194
統計：A(24),B(4),C(1),D(0),E(0)