______ he has made up his mind, no one can make him change it.A．UnlessB．OnceC．Un
题型：不详难度：来源：
______ he has made up his mind, no one can make him change it.| A．Unless | B．Once | C．Until | D．As |
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答案
| B |
解析
试题分析：考查连词辨析。A除非；B一旦；C直到…才；D当…时；句意：一旦他下定了决心，就没有人能让他改变。故B正确。
点评：连词的辨析也要放在上下文中进行，要注意unless用法，要把它改成if…not…便于理解。 |
举一反三
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