The voyages of travellers before the 17th century show that they were not the se
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The voyages of travellers before the 17th 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
试题答案
D
短语辨析. A.以……为代价； B.冒着……的危险 C. 妨碍；关于……方面 D. 受……支配。句意：十七世纪前的旅行者的航行告诉我们尽管他们没有现代助航设备，他们也不受大海支配。故选D。