______ he has made up his mind, no one can make him change it.A．Once B．UnlessC．U
题型：不详难度：来源：
______ he has made up his mind, no one can make him change it.| A．Once | B．Unless | C．Until | D．As |
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答案
| A |
解析
试题分析：考查连词辨析。A一旦；B除非，如果…不…；D直到…才；D因为；句意：一旦他下定决心，没有人能让他改变。故A正确。
点评：连词的辨析要放在上下文中进行，特别注意unless=if…not如果…不;该词是考试的重点。 |
举一反三
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