1.单选题- (共11题)
| A．由于盐酸能够跟金属起反应，所以不能用于金属除锈 |
| B．氢氧化钠常用来改良酸性土壤 |
| C．由于浓硫酸具有脱水性，所以常用作某些气体的干燥剂 |
| D．熟石灰可以硫酸铜混合在一起配制波尔多液 |
| A．浓硫酸需要密封保存，是为了防止其与空气中的水蒸气反应 |
| B．稀释浓硫酸时，将水沿器壁慢慢注入浓硫酸中，并不断搅拌 |
| C．pH为11的氢氧化钠溶液加水稀释，可以配成pH为13的溶液 |
| D．如果不慎将碱液沾在皮肤上，要用较多水冲洗，再涂上硼酸溶液 |
| A．Cu放入稀盐酸中充分搅拌 |
| B．CuO放入稀盐酸中充分搅拌 |
| C．Cu放入稀硫酸中搅拌后再加稀盐酸 |
| D．Cu(OH)2放入MgCl2溶液中充分搅拌 |
| A．仅④ | B．仅①② | C．①②③ | D．①②③④ |
2.选择题- (共15题)
Thang-ga(唐卡）is a special kind of painting .It was found only in Tibet,China. It started from the Tang Dynasty(唐朝). Thang-ga paintings show Tibetan people's lives. In recent years, Tang-ga paintings have caught the public's attention .At the same time,the Chinese government has also tried hard to protect the art.
The color of Tang-ga paintings looks wonderful and special. Because of the special environment of Tibet and the excellent skills of artists, the paints(颜料) used in Thang-ga are different from other paints. They were made from minerals like gold and silver, as well as some plants. The paints were made by hand and the beautiful colors could last(持续)for hundreds of years.
However, with the development of technology, people now use cheaper and more easily-made chemicals to make Thang-ga paints. The traditional paints used in Thang-ga paintings took a lot of work and they were made in many secret ways. Later people stopped making the paints and forgot about them. So the skills needed to make them were almost lost. The traditional Thang-ga paintings are difficult to find now.
Thang-ga(唐卡）is a special kind of painting .It was found only in Tibet,China. It started from the Tang Dynasty(唐朝). Thang-ga paintings show Tibetan people's lives. In recent years, Tang-ga paintings have caught the public's attention .At the same time,the Chinese government has also tried hard to protect the art.
The color of Tang-ga paintings looks wonderful and special. Because of the special environment of Tibet and the excellent skills of artists, the paints(颜料) used in Thang-ga are different from other paints. They were made from minerals like gold and silver, as well as some plants. The paints were made by hand and the beautiful colors could last(持续)for hundreds of years.
However, with the development of technology, people now use cheaper and more easily-made chemicals to make Thang-ga paints. The traditional paints used in Thang-ga paintings took a lot of work and they were made in many secret ways. Later people stopped making the paints and forgot about them. So the skills needed to make them were almost lost. The traditional Thang-ga paintings are difficult to find now.
3.填空题- (共2题)
-
【1】题量占比
单选题:(11道)
选择题:(15道)
填空题:(2道)
-
【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：11
7星难题：0
8星难题：2
9星难题：0