1 |
a |
1 |
a |
1 |
a |
A.(-∞,4] | B.(-∞,2] | C.(-4,4] | D.(-4,2] |
|
A.1≤a<3 | B.1<a<3 | C.
| D.
|
A.(3,7) | B.(9,25) | C.(13,49) | D.(9,49) |
1 |
2 |
1 |
2 |
3π |
4 |
10 |
2 |
3 |
A.a<b<c | B.c<a<b | C.c<b<a | D.b<c<a |
A.{x|x>0} | B.{x|x<0} |
C.{x|x<-1,或x>1} | D.{x|x<-1,或0<x<1} |
© 2017-2019 超级试练试题库,All Rights Reserved.