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问题
选择题
下列运算正确的是( )
A.x
2
•x
3
=x
6
B.(-x
2
)
3
=x
6
C.(x-1)
0
=1
D.6x
5
÷2x=3x
4
答案
答案:
D
选择题
It didn’t surprise us at all________caused his success.
A.why
B.what
C.how
D.that
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名词解释
解吸作用
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