2 |
x |
3 |
y |
4 |
z |
3 |
x |
2 |
y |
1 |
z |
1 |
x |
1 |
y |
1 |
z |
2 |
x |
3 |
y |
4 |
z |
3 |
x |
2 |
y |
1 |
z |
5 |
x |
5 |
y |
5 |
z |
5(x+y+z) |
xyz |
x+y+z |
xyz |
1 |
x |
1 |
y |
1 |
z |
x+y+z |
xyz |
1 |
y |
1 |
x |
3 |
a-1 |
2 |
2-a |
x |
x-y |
y |
y-x |
a |
b |
c |
d |
a+b |
a-b |
c+d |
c-d |
a+b |
a-b |
c+d |
c-d |
x |
y |
y |
x |
A.
| B.
| C.
| D.5 |
© 2017-2019 超级试练试题库,All Rights Reserved.