1.选择题- (共8题)
Rent(出租)a room
Spare room? Not only will a lodger (房客) earn you some money, but also, thanks to the government-backed “rent a room” program, you won't have to pay any tax (税) on the first ￡4,500 you make per year. Try advertising your room on Roomspare or Roommateeasy.
Make money during special events
Don't want a full-time lodger? Then rent on a short-term basis (基础). If you live in the capital, renting a room out during the Olympics or other big events could bring in money. Grashpadder can advertise your space.
Use your roof (屋顶)
You need the right kind of roof, but some energy companies pay the cost of fixing solar equipment (around￡14,000), and let you use the energy produced for nothing. In return, they get paid for unused energy fed back into the National Grid. However, you have to sign a 25-year agreement with the supplier (供应商), which could prevent you from changing the roof.
Rent(出租)a room
Spare room? Not only will a lodger (房客) earn you some money, but also, thanks to the government-backed “rent a room” program, you won't have to pay any tax (税) on the first ￡4,500 you make per year. Try advertising your room on Roomspare or Roommateeasy.
Make money during special events
Don't want a full-time lodger? Then rent on a short-term basis (基础). If you live in the capital, renting a room out during the Olympics or other big events could bring in money. Grashpadder can advertise your space.
Use your roof (屋顶)
You need the right kind of roof, but some energy companies pay the cost of fixing solar equipment (around￡14,000), and let you use the energy produced for nothing. In return, they get paid for unused energy fed back into the National Grid. However, you have to sign a 25-year agreement with the supplier (供应商), which could prevent you from changing the roof.
—How about joining us in the summer camp?
—I wish I could, ___________ I have to practice for the piano test.
—How about joining us in the summer camp?
—I wish I could, ___________ I have to practice for the piano test.
2.单选题- (共3题)
| 编号 | 实验 | 操作 |
| A | 除去粗盐溶液中的Ca2+、SO42- | 依次加入过量的Na2CO3溶液、BaCl2溶液，过滤后再加适量盐酸 |
| B | 配制480mL0.200mol·L－1Na2CO3溶液 | 称取28.6 gNa2CO3·10H2O固体，放入到500mL的容量瓶中，加水溶解，振荡摇匀，定容 |
| C | 配制Fe(OH)3胶体 | 将烧杯中的蒸馏水加热至沸腾，向沸水中逐滴加入5~6滴FeCl3饱和溶液。继续煮沸至溶液呈红褐色，停止加热。 |
| D | 取出分液漏斗中所需的上层液体 | 下层液体从分液漏斗下端管口放出，关闭活塞，换一个接收容器，上层液体继续从分液漏斗下端管口放出 |
| A．A | B．B | C．C | D．D |
| A．Cu粉(CuO)：加稀硫酸、微热、过滤 |
| B．乙醇（沸点为78℃）（NaCl）：蒸馏 |
| C．淀粉溶液(KI)：渗析 |
| D．KNO3溶液(I2)：加酒精，分液 |
| A．加入BaCl2溶液有白色沉淀产生，再加入盐酸，沉淀不消失，则原溶液中一定有SO42— |
| B．氢氧化钠溶液应盛放在带橡胶塞的细口瓶中 |
| C．向Fe(OH)3胶体中逐滴滴入过量的稀硫酸，能发生“先沉淀后溶解”现象 |
| D．液态氯化氢不导电，但氯化氢是电解质 |
3.填空题- (共2题)
①加热试管时，先均匀加热，后局部加热
②加热氯酸钾和二氧化锰的混合物制备氧气，用排水法收集气体后，先移出导管后撤酒精灯
③使用托盘天平称量物体质量时，先放质量较小的砝码，后放质量较大的砝码
④点燃可燃性气体如H2、CO等时，先检验气体纯度后点燃
⑤做H2还原CuO实验时，先通H2后加热CuO，反应完毕后，先撒酒精灯待试管冷却后停止通H2
⑥制取气体时，先检查装置气密性后装药品
⑦配制稀硫酸时，先量取一定体积的浓硫酸倒入烧杯中，后加适量的蒸馏水稀释
①将固体混合物溶于水中，搅拌后得无色透明溶液；
②往此溶液中滴加硝酸钡溶液，有白色沉淀产生；
③过滤，将沉淀物置于稀硝酸中，发现沉淀全部溶解。
根据上述实验事实，回答下列问题：
(1)原固体混合物中一定含有的物质是________，一定不含有的物质是________，可能含有的物质是________(以上空格均填写化学式)。对可能含有的物质，可采用向滤液中滴加___________________溶液的方法来检验。
(2)写出步骤③中的离子方程式__________________________________________________。
4.实验题- (共1题)
（1）所用浓H2SO4的物质的量浓度为_________________，配制时所需浓硫酸的体积为___________mL。（均保留一位小数）
（2）实验中需要用到的定量仪器有___________________________________________。
（3）实验中玻璃棒的作用_______________________
（4）若实验中出现下列现象，对所配溶液的浓度有什么影响？（填“偏高”、“偏低”或“无影响”）
①用量筒量取所需浓硫酸倒入烧杯后，再用水洗量筒2~3次，洗液倒入烧杯中_____
②浓硫酸溶解后未冷至室温即进行转移、定容。______
③定容时仰视刻度线。_______
（5）若定容时液面高于刻度线应采取的措施是_______________________。
（6）若实验操作全部无误，最后所得的溶液应存放在试剂瓶中，并贴上标签，请你帮助把标签上的内容写一下（如下图）。______________(填上标签上的内容)
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【1】题量占比
选择题:(8道)
单选题:(3道)
填空题:(2道)
实验题:(1道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：5
7星难题：0
8星难题：1
9星难题：0