1 |
a |
1 |
b |
A.a>b | B.a<b | C.a>b,且ab<0 | D.a>b,且ab>0 |
1 |
2 |
1 |
a |
1 |
b |
1 |
2 |
1 |
a |
1 |
b |
A.a2>b2 | B.
| C.a2>ab | D.2a>2b |
A.a+b<ab | B.|a|>|b| | C.
| D.
|
7 |
3 |
5 |
A.a>b>c | B.c>a>b | C.c>b>a | D.b>c>a |
4 |
5 |
5 |
4 |
1 |
2 |
5 |
4 |
A.b>a>c | B.a>b>c | C.c>b>a | D.b>c>a |
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