◎ 题干
— Lucy looks very healthy. Do you know _____?
— At least half an hour.
[     ]
A. how often she exercises.
B. how many vegetables she eats every day
C. how much milk she drinks every day
D. how long she exercises every day
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— Lucy looks very healthy. Do you know _____?— At least half an hour.[ ]A. how often she exercises. B. how many vegetables she eats every dayC. how much m…”主要考查了你对  【宾语从句】  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。