1 |
2 |
b |
A.6 | B.7 | C.8 | D.9 |
1 |
2 |
b |
1 |
2 |
b |
b |
4 | ||
a+
|
4 | ||
a+
|
5 |
5 |
b |
A.若a,b,c是等差数列,则lga,lgb,lgc是等比数列 |
B.若a,b,c是等比数列,则lga,lgb,lgc是等差数列 |
C.若a,b,c是等差数列,则10a,10b,10c是等比数列 |
D.若a,b,c是等比数列,则10a,10b,10c是等差数列 |
A.8 | B.-8 | C.0 | D.10 |
1 |
2 |
A.
| B.
| C.
| D.
|
1 |
2 |
A.|a|<1 | B.|a|<
| C.|a|>
| D.1<|a|<
|
A.(0,1] | B.[2,+∞) | C.(0,4] | D.[4,+∞) |
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