His friends ignored his advice, ______ they knew it to be helpful.A.as ifB.since

His friends ignored his advice, ______ they knew it to be helpful.A.as ifB.since

题型:不详难度:来源:
His friends ignored his advice, ______ they knew it to be helpful.
A.as ifB.sinceC.even ifD.so that

答案
C
解析

试题分析:考查连词辨析。A似乎;B自从,既然;C即使;D以至于;句意:他的朋友不理睬他的建议。即使他们知道这些建议很有帮助。故C正确。
点评:连词的辨析要根据上下文的语境和语义进行。要注意同一个连词的不同含义的区别。
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