問題詳情
【題組】42. The step-test was given _____.
(A) after each exercise period
(B) at the beginning and at the end of the seven-week period
(C) only once, at the beginning of the seven-week period
(D) twice to the men in Group A and once to the men in Group B
(E) once to the men in Group A and twice to the men in Group B
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)