【参考答案】
1. B
2. D
3. C
4. C
5. B
6. (1)F+H2O HF+OH
(2) S2+H2O HS+OH
(3) NH4+H2O NH3•H2O+H+
(4) Al3+3H2O Al(OH)3+3H
7. B
8. D
9. B
10. D