1 |
2 |
22 |
7 |
3 |
4 |
22 |
7 |
3 |
4 |
1 |
2 |
22 |
7 |
3 |
4 |
1 |
2 |
22 |
7 |
3 |
4 |
1 |
2 |
22 |
7 |
3 |
4 |
1 |
2 |
1 |
2 |
22 |
7 |
3 |
4 |
A.3个 | B.4个 | C.5个 | D.6个 |
n |
m |
n |
m |
A.零除以任何有理数都得零 |
B.相反数等于它本身的有理数只有零 |
C.倒数等于它本身的有理数只有1 |
D.绝对值等于它本身的有理数只有1 |
1 |
3 |
A.1 | B.2 | C.3 | D.4 |
1 |
2 |
1 |
3 |
1 |
4 |
1 |
5 |
1 |
6 |
A.-
| B.
| C.-7 | D.7 |
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