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8.              you try to do something beyond what you have already mastered,you will never grow.(  )
A.OnceB.IfC.UnlessD.Because

分析 如果你不尽力做超出你已经掌握的事件,你永远不会成长.

解答 答案是C.本题考查从属连词辨析.once一旦;if 如果;unless 除非;如果不;because因为;根据语境,"如果不"尽力做超出掌握的事,就没有成长;故选C.

点评 就从属连词的解题,考生首先要理解各从属连词的含义,并理解各连词所引导的从句的特殊用法;最后结合句子的结构和语境做出符合语义、语法和逻辑常识的选择.

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