◎ 题干
He is only too ready to help others, seldom, ________ refusing them when they turn to him.
[     ]
A. if never  
B. if ever
C. if not  
D. if no
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“He is only too ready to help others, seldom, ________ refusing them when they turn to him. [ ]A. if neverB. if everC. if notD. if no…”主要考查了你对  【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。