題目列表(包括答案和解析)
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
b |
a |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
A、(1)(2)(3) |
B、(2)(3)(4) |
C、(1)(3)(4) |
D、(1)(2)(4) |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
b |
a |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
A.(1)(2)(3) | B.(2)(3)(4) | C.(1)(3)(4) | D.(1)(2)(4) |
1 |
x |
1 |
x |
f(x)2-2x |
2 |
s2 |
2 |
s3 |
3 |
sn |
n |
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