The voyages of travellers before the 17th century show that they were not ________ the sea even thou

题目简介

The voyages of travellers before the 17th century show that they were not ________ the sea even thou

题目详情

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  
题型:单选题难度:偏易来源:安徽省月考题

答案

D

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