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【单选题】
生活是化学的源泉，下列有关生产、生活中的化学叙述错误的是（ ）A.
明矾[KAl(SO 4 ) 2 ·12H 2 O]在水中能形成Al(OH) 3 胶体，可用作净水剂
B.
变质的植物油有难闻的特殊气味，是由于植物油发生了酯化反应
C.
一定浓度的双氧水可用于伤口的消毒
D.
采煤工业上，爆破时把干冰和炸药放在一起，既能增强爆炸威力，又能防止火灾
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【简答题】3Amy Chua's book Battle Hymn (赞美诗) of the Tiger Mother created a significant impression when it was published in 2011. ( )
【单选题】After breakfast, little Tony went to school by bicycle as ______.
A.
general
B.
usual
C.
common
D.
ordinary
【单选题】Amy Chua's book _______ when it was published in 2011.
A.
detailed
B.
made waves
C.
fixed up
D.
criticised
【简答题】Why did Amy Chua’ s Battle Hymn of the Tiger Mother raise concerns?A. A my Chua, the mother of two daughters, is overly strict with her daughters’ academic performances by laying out “ten commandments...
【单选题】Tony spent three years _____ Chinese before he went to China to study. [ ]
A.
learn
B.
to learn
C.
learning
D.
learns
【单选题】三极管由两个PN结组成，用两个正极相连的串联二极管
A.
可以代替NPN型三极管
B.
E、C两极互换后可以代替NPN型三极管
C.
可以代替PNP型三极管
D.
E、C两极互换后可以代替PNP型三极管
E.
不能代替任何一种结构的三极管
【单选题】单项选择。 — What's this ? — ______. [ ]
A.
This is a book.
B.
That's a book.
C.
It's a book.
D.
I'm a book.
【简答题】Amy Chua’s book Battle Hymn (赞美诗) of the Tiger Mother——(词组:造成轰动) when it was published in 2011.
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