题目内容
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[填空题]
- () -Oh, no,Frankly speaking, I seldom do online shopping.
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Frankly speaking, I' d rather you ______anything about it for the time being.
A.didn't do
B.haven't done
C.don't do
D.have done
A.Importantly
B.Skeptically
C.Frankly
D.Favorably
A.don’t involve
B.didn’t involve
C.were not involved
D.are not involved
Fe(OH)3,Co(OH)3,Ni(OH)3的氧化性依次_________,Fe(OH)2,Co(OH)2,Ni(OH)2中_________不与空气中的氧作用。
下列物质中,酸性最强的是 ()
A.B(OH)3
B.Al(OH)3
C.Si(OH)4
D.Sn(OH)4
A.-OH>-CH3>-COOH
B.-COOH>-OH>-CHs
C.-OH>-COOH>-CH3
D.-COOH>-CH3>-OH