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【多选题】
双向沟通必须包含哪些行为( )。A.
说的行为
B.
听的行为
C.
问的行为
D.
看的行为
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反馈参考答案：
举一反三
【多选题】异烟肼具有的性质有( )
A.
吡啶环的γ位上可被酰肼基取代
B.
具有较强的还原性
C.
可以与氨制的硝酸银试液等氧化试剂反应
D.
可与某些羰基试剂发生缩合反应
E.
具有较强的氧化性
【单选题】— Must I take my umbrella? — No, you ______. It's not going to rain. [ ]
A.
mustn't
B.
needn't
C.
haven't to
D.
can't
【简答题】The sign reads "in ease of ______ fire, break the glass and push ______ red button" A) /, a B) /, the C) the, the D) a, a
【简答题】“... The two big advantages I had at birth were to have been born wise and to have been born in poverty...It gave me one big advantage: none of my troubles or problems as an could throw me.” Sop...
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