A.0<a<b<1 | B.1<a<b | C.0<b<a<1 | D.1<b<a |
(log25)2-4log25+4 |
1 |
5 |
A.2 | B.2log25 | C.-2 | D.-2log25 |
A.
| B.
| C.
| D.
|
A.依次成等比数列 |
B.各数的倒数依次成等比数列 |
C.依次成等差数列 |
D.各数的倒数依次成等差数列 |
2 |
x+|x| |
x+|x| |
2 |
A.log2x | B.-log2x | C.2-x | D.x-2 |
1+a3 |
1+a |
A.(0,
| B.(
| C.(
| D.(1,+∞) |
© 2017-2019 超级试练试题库,All Rights Reserved.