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【简答题】
水样富集与分离的方法有气提、顶空和蒸馏法、______、吸附法、______和共沉淀法等。[华中农业大学2012年研]
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举一反三
【简答题】Karen and Kevin work in a hospital . They (do not/does not) go to school.
【单选题】What information can be got about Estonia from the passage?
A.
It restricts free access to Internet.
B.
Free Wi-Fi is set up all over the country.
C.
It is impossible for other countries to follow its suit.
D.
Its people can get free Wi-Fi access almost everywhere.
【简答题】Karen and Kevin work in a hospital . They (don't/doesn't) go to school.
【单选题】Karen and Kevin work in a hospital. They ______ to school.
A.
not go
B.
don't go
C.
no go
D.
doesn't go
【简答题】Christmas was just a week away and I had five people left to shop for but only three dollars. 'Let's set a price limit on our gifts this year,'I suggested to my best friend Joanie. 'That's a good idea...
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