問題詳情

【題組】47．What do you have to do when sailing against the wind?　　
(A)Move in a straight line.
(B)Allow the sail to flap.　　
(C)Lower the sail.
(D)Tack the boat.

參考答案

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)