题目内容
2.Don't press the red button______ it is absolutely necessary.( )A. | so that | B. | unless | C. | as long as | D. | when |
分析 不要按红色的按钮,除非非常必要.
解答 答案是B.本题考查从属连词辨析;so that为了(表目的),以便(表结果);unless如果不,除非;as long ass只要;when当…时候;根据语境,"除非有必要",否则不要按红色按钮,故选B.
点评 首先要理解连词的功能:并列连词连接并列的词、短语或句子;从属连词连接主从句;其次理解各连词含义;最后结合语境做出判断.
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