◎ 题干
I think the _____ invention is a mobile phone. What about you?
[     ]
A. helpful
B. more helpful
C. helpfulest
D. most helpful
◎ 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“I think the _____ invention is a mobile phone. What about you? [ ]A. helpful B. more helpful C. helpfulestD. most helpful …”主要考查了你对  【形容词的比较级,形容词的最高级】  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。