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【判断题】
液膜溶液的组成和液膜分离工艺条件都会影响液膜萃取的效果。( )A.
正确
B.
错误
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举一反三
【单选题】I want to buy a nice present ________ my mother and I must give it ________ her myself.
A.
for; to
B.
to; for
C.
with; to
D.
for; for
【简答题】请根据材料内容，完成各题。 I had a good time on Children’s Day this year. Do you want to know how I spent it? On the morning of Children’s Day. mum came to my (1)_________with a smile on her face. “________Childr...
【简答题】服装厂用21.45米布做15套校服，平均每套校服用布多少米？
【单选题】I want to buy a nice present _____ my mother and I must give it _____ her myself. [ ]
A.
for; to
B.
to; for
C.
for; for
D.
to; to
【单选题】I expressed my opposition directly and I don’t want to give you a (n) ______impression.
A.
urgent
B.
illegal
C.
impolite
D.
false
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