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【判断题】
青霉素钠鉴别不需要用钠盐鉴别反应进行鉴别A.
正确
B.
错误
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举一反三
【单选题】—Mike, please don’t make so much noise. —Pardon? —I ______ you not to make so much noise.
A.
tell
B.
had told
C.
told
D.
will tell
【单选题】Please don ’ t make so much noise.I _____ hear the speaker very well.
A.
needn ’ t
B.
mustn ’ t
C.
can ’ t
【单选题】Please don ’ t make so much noise. I _______ hear the speaker very well.
A.
needn ’ t
B.
can ’ t
C.
mustn ’ t
D.
woudn't
【单选题】Don－t do any other things while you are doing your homework． So please_________your
A.
14． Don-t do any other things while you are doing your homework． So please_________ your MP3． A． turn up
B.
turn down
C.
turn on
D.
turn off
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