Question

【题目】 If anything should happen, the nearest person he could contact by radio , _____ there was a ship nearby, would be on an island 885 miles away.

A. until B. when C. once D. unless

Answer 1

【答案】D

【解析】

试题分析： 考查连词。A. until 直到；B. when当。。时候；C. once 一旦；D. unless除非；句意：如果发生什么意外，他能联系到最近的有船的人，也在885公里之外。根据句意可知选D项。

考点 : 考查连词