Question

The voyages of travellers before the 17^th century show that they were not ________ the sea even though they didn’t have modern navigational aids.

A．at the expense of

B．at the risk of

C．in the way of

D．at the mercy of

Answer 1

D

短語辨析. A.以……為代價； B.冒著……的危險 C. 妨礙；關于……方面 D. 受……支配。句意：十七世紀前的旅行者的航行告訴我們盡管他們沒有現代助航設備，他們也不受大海支配。故選D。