The World Health Organization has given some advice on to protect us from being infected(感染） with H7N9.
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A
how
B
what
C
where
D
when
推荐题目
Tom swims __________ than I, but he doesn’t swim_________ my brother.
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A
better; so well as
B
better; as good as
C
much well; as well as
D
better; so good as