◎ 题干
This kind of exercise is most _____, and therefore is a good test of you students' ability.
[     ]
A. surprising
B. encouraging
C. exciting
D. challenging
◎ 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“This kind of exercise is most _____, and therefore is a good test of you students' ability. [ ]A. surprising B. encouraging C. excitingD. challenging …”主要考查了你对  【形容词】  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。