问题
选择题
Jack has a bad eating habit. He doesn't like carrots, cabbages ________ tomatoes.[ ]
A. and
B. but
C. so
D. or
答案
答案：D
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Jack has a bad eating habit. He doesn't like carrots, cabbages ________ tomatoes.[ ]
A. and
B. but
C. so
D. or
答案：D
下表对某些反应方程式的评价合理的是( )
| 编号 | 实验 | 离子方程式或电极反应式 | 评价 |
| A | 次氯酸钙溶液中通入足量SO2 | Ca2++ClO-+SO2+H2O CaSO4↓+Cl-+2H+ | 正确 |
| B | Ba(OH)2溶液中加入过量Al2(SO4)3溶液 | 3Ba2++6OH-+2Al3++3S 3BaSO4↓+2Al(OH)3↓ | 正确 |
| C | 醋酸铵溶于水 | CH3COO-+N  CH3COOH+NH3·H2O | 错误,阴阳离子水解相互促进,应该用“”号 |
| D | 用惰性电极电解氯化铜和氯化钠的混合溶液一段时间 | 阴极:Cu2++2e-Cu 阳极:4OH--4e- | 错误,只因为两极得失电子没配平 |