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Few people paid full attention to their health conditions ________ they were seriously ill.
A.when B.if C.until D.after
C

试题分析:考查连词辨析。A当…时;B如果;C直到…才…;D在…后;本句中的not…until…直到…才…;如果前面的句子使用的短暂性动词,就使用否定句;如果前面的动词是延续性动词就使用until来引导;句意:直到他们生了重病以后他们才会注意到他们的健康状况。故C正确。
点评:此题主要考查连词的辨析,选择连词主要是看前后句的关系,因果关系用表因果的连词,转折关系用转折连词,并列关系用并列连词,要求考生具有一定的句子分析能力和词义辨析能力。
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