A.如果a>1,那么0<
| B.如果a<1,那么
| ||||
C.如果a2>0,那么a>0 | D.如果-1<a<0,那么a2>1 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
c |
a |
A.③④ | B.①③ | C.①② | D.②④ |
A.(1),(2) | B.(1),(3) | C.(2),(3) | D.(1),(2),(3) |
|
A.x≥3 | B.x≤6 | C.3≤x≤6 | D.x≥6 |
A.ac>bc | B.ac<bc | C.ac2>bc2 | D.ac2≥bc2 |
A.x≤2 | B.x<2 | C.x≥-2 | D.x>-2 |
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