问题
选择题
| Father is coming. What present________for your birthday? |
A. you expect he has got B. you expect has he got C. do you expect he has got D. do you expect has he got |
答案
答案：C
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| Father is coming. What present________for your birthday? |
A. you expect he has got B. you expect has he got C. do you expect he has got D. do you expect has he got |
答案：C
下列有关物质检验的实验结论正确的是[ ]
实验操作及现象 | 实验结论 | |
| A. | 将木炭和浓硫酸反应生成的气体通入澄清石灰水中， | |
| 有白色沉淀生成 | 该气体一定是CO2 | |
| B. | 向某溶液中加入2滴KSCN溶液，溶液不显红色。 | |
| 再向溶液中加入几滴新制的氯水，溶液变为红色 | 该溶液中一定含有Fe2+ | |
| C. | 将少量某物质滴加到新制的氢氧化铜悬浊液中，加 | |
| 热后有红色沉淀生成 | 说明该物质一定是醛 | |
| D. | 常温下，向盛有1mL 0.01mol·L-1 AgNO3溶液的试管 | |
| 中滴加0.01mol·L-1NaCl溶液，至不再有沉淀生成，再 | ||
| 向其中滴加0.01mol·L-1 NaI溶液，产生黄色沉淀。 | 常温下，Ksp(AgCl)> Ksp(AgI) |
