单项选择题

The main idea of the whole story is that ______.

[A] some insects hurt us and some insects help us
B. silkworms make silk while bees make honey
C. farmers like to spray insects in their fields
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单项选择题
Outdoor sports and outdoor recreations are some important forms of relaxing from time to time.
A． Right.
B． Wrong.
C． Doesn't say.
单项选择题
Many people like watching sports but only some of them like taking part in them.
A． Right.
B． Wrong.
C． Doesn't say.
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