题目内容
20．Hurry up， you will miss the early train．（ ）| A． | or | B． | and | C． | if | D． | unless |
分析 快点，否则你会错过早班车．
解答 答案：A；
根据语境以及上下文，本题考查的是连词的用法．根据设空处前后句子可以推断句意是：快点，否则你会错过早班车．句型"祈使句+or+陈述句"，表示在以祈使句为条件下的相反假设，意为"否则，要不然"，所以用连词or（否则）；故选A．
点评 比较和分析选项中连词的不同含义及其用法是解答该题的关键；还要根据句中信息正确推测该句句意，进而作出解答．
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