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【单选题】
下列醇按酸性大小的顺序排列为(   ) (1)CH3CH2OH;(2)CH3CH2OHCH3;(3)PhCH2OH;(4)(CH3)3C—COHA:(3) > (1) > (2) > (4); B:(1) > (2) > (3) > (4);C:(3) > (2) > (1) > (4); D:(1) > (3) > (2) > (4)
A.
(3) > (1) > (2) > (4)
B.
(1) > (2) > (3) > (4)
C.
(3) > (2) > (1) > (4)
D.
(1) > (3) > (2) > (4)
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A.
Because they were worn out and couldn't be worn any longer.
B.
Because he wanted to test his dog's ability to get things back.
C.
Because they brought him a lot of trouble.
D.
Because they were old and ugly.
【判断题】You can send your iPhone for repair in a shipping box provided by Apple and they will pay all the charges at any time.
A.
正确
B.
错误
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A.
第一次鸦片战争
B.
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C.
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A.
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B.
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D.
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A.
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B.
[au] [ai]
C.
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D.
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A.
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B.
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A.
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B.
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C.
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D.
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A.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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E.
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