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
—Can you hear me?—No, I can’t. Would you please speak _________?
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A
clearly enough
B
clear enough
C
enough clear
D
enough clearly
He had ________ money, so he asked his mother for some.
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A
a few
B
a little
C
few
D
little
I am _________ at the __________ news.
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A
surprise; surprising
B
surprised; surprising
C
surprising; surprising
D
surprised; surprised