n |
m |
x |
y |
2h |
π |
15 |
x+y |
x+1 |
x+1 |
A.2个 | B.3个 | C.4个 | D.5个 |
n |
m |
x |
y |
15 |
x+y |
x+1 |
x+1 |
x+y |
1-xy |
x |
2 |
2 |
x |
1 |
2-x |
x2-9 |
x+3 |
x+1 |
π |
A.2 | B.3 | C.4 | D.5 |
1 |
a |
x-y |
x+y |
m-n |
5 |
1 |
x |
x |
3 |
a |
2π |
A.2个 | B.3个 | C.4个 | D.5个 |
A.
| B.
| C.
| D.
|
a+2b |
3 |
1 |
x |
1 |
x-3 |
5 |
a-x |
x |
π-3 |
A.1个 | B.2个 | C.3个 | D.4个 |
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