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【单选题】
所列化合物若发生亲电取代反应速度最快的是A.
苯
B.
甲苯
C.
氯苯
D.
硝基苯
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皮皮学刷刷变学霸
举一反三
【单选题】We also want to use the water to irrigate barren desert land.
A.
hairless
B.
bare
C.
empty
D.
bald
【多选题】If we want to show that there is a problem against a certain research background, we can use
A.
(Problems in certain research area) are …, yet (the present solution) has frequently been questioned because …
B.
This paper describes/presents … (the argument) within … (a theoretical context)
C.
Based on the idea that …, we conducted the present study, categorized …, and evaluated …
D.
While (the debate on certain research subject) seems to …, (the present agreement) is still problematic.
【简答题】Every day we use money to buy what we want. But have you ever really noticed the bill (钞票) in your hand? There are different pictures on both sides of banknotes (纸币) and interesting stories behind the...
【判断题】A locutionary act is the act of conveying literal meaning by means of syntax, lexicon, and phonology.()
A.
正确
B.
错误
【单选题】—We’d better_______ if we want to be on time． —OK．
A.
sweep up
B.
use up
C.
speed up
D.
set up
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