◎ 题干
She was very hardworking ________he was very lazy.As a result,she passed the examination,but he
failed.
[     ]
A.when 
B.since  
C.while  
D.as
◎ 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“She was very hardworking ________he was very lazy.As a result,she passed the examination,but hefailed.[ ]A.whenB.sinceC.whileD.as…”主要考查了你对  【并列连词】  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。