◎ 题干
—Which of the twins runs ______?     
—It's hard to say. They are neck and neck now.
A. fast 
B. faster
C. fastest
D. the fastest
◎ 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“— Which of the twins runs ______?— It's hard to say. They are neck and neck now.[ ]A. fast B. faster C. fastest D. the fastest…”主要考查了你对  【副词的比较级,副词的最高级】  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。