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【单选题】
83适合酸性介质的反应釜首选是( )A.
搪瓷玻璃
B.
铸铁
C.
不锈钢
D.
都可以
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反馈参考答案：
举一反三
【单选题】Jack often does things foolishly, so he ___ sometimes ___ by others.
A.
is...laughed
B.
is...laughed at
C.
was...laughed
D.
has...been laughed at
【单选题】Jack often does things foolishly, so he ____ sometimes _____ by others. A.
A.
is…laughed
B.
is …laughed at
C.
was…laughed
D.
. has…been laughed at
【单选题】Jack is full of vitality and He often does things_______.
A.
energetic
B.
energetically
C.
energy
D.
engage
【简答题】Jack is full of vitality and he often does things ________.
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