A tourist will easily lose his way in Beijing he has a map or a guide．( )A．ifB．becauseC．unlessD．when 题目和参考答案——青夏教育精英家教网——

题目内容

17．A tourist will easily lose his way in Beijing _________ he has a map or a guide．（　　）

A．

if

B．

because

C．

unless

D．

when

分析旅行者很容易在北京迷路，除非他有地图或者向导．

解答答案：C；if，如果；because，因为；unless，除非；when，当…的时候；根据句中的"A tourist will easily lose his way in Beijing旅行者很容易在北京迷路"和"he has a map or a guide他有地图或者向导"可知后者是前者的条件；用unless除非，故选C．

点评连词的用法都比较多，熟记其基本应用规则，了解其区别，是做好此类题型的关键．

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