b |
a |
1 |
2 |
c |
a |
1 |
2 |
b |
a |
-a-c |
a |
c |
a |
c |
a |
1 |
2 |
c |
a |
1 |
2 |
c |
a |
b |
a |
c |
a |
1 |
2 |
c |
a |
1 |
2 |
A.(1)(3) | B.(1)(4) | C.(2)(3) | D.(2)(4) |
A.(0,4) | B.[0,4] | C.(-∞,0)∪(4,+∞) | D.(-∞,0]∪[4,+∞) |
x | 20 |
a |
b |
a |
b |
A.1 | B.2 | C.3 | D.4 |
x2 |
25 |
y2 |
9 |
x2 |
35 |
1 |
2 |
a |
b |
a |
b |
a |
b |
c |
a |
b |
c |
© 2017-2019 超级试练试题库,All Rights Reserved.