1.单选题- (共12题)
| A．反应开始时，没有把试管内的空气排干净 |
| B．温度太低 |
| C．铜没有在一氧化碳气流中冷却而又被空气中氧气所氧化 |
| D．试管口倾斜了 |
A. 该化学方程式中n=l B. SiO2作氧化剂
C. 反应前后原子总数发生变化 D. CO是还原剂
A. NH3 B. NO C. NO2 D. N2
| 物质 | 0℃ | 30℃ | 60℃ | 90℃ |
| 甲 | 13.3 | 45.8 | 110 | 202 |
| 乙 | 35.5 | 36.0 | 37.1 | 38.1 |
| 丙 | 0.18 | 0.16 | 0.12 | 0.08 |
根据表中数据可推出的结论是
| A．甲、乙、丙三种物质的溶解度大小顺序是甲>乙>丙 |
| B．30℃时，三种物质的饱和溶液溶质质量分数甲>乙>丙 |
| C．降低温度可使丙的不饱和溶液变为饱和溶液 |
| D．使甲物质从一定温度下的饱和溶液中析出，一般采用蒸发溶剂的方法 |
2.选择题- (共10题)
假如你有一个外国笔友，你准备向他介绍你最好的朋友— 李阳。李阳是个很聪明的学生，住在南京, 但他有一些不好的习惯。请你根据下面表格提供的信息，用英文写一篇短文，并针对他存在的一些问题提出合理的建议。
Name | Li Yang |
Class | Class 10, Grade 7 |
Looks | big eyes、short and fat，glasses |
Likes | play computer games; watch TV; hamburgers; cola |
Dislikes | swim; run; vegetables |
Suggestions | ◆…… ◆…… |
具体要求：1）不少于80词，开头已给出，不计入总词数;
2）语句通顺，意思连贯，条理清楚，字迹工整;
3）内容必须包括上表中的要点，不要逐字翻译，可适当发挥。
Li Yang is my best friend.
阅读下列短文，从文后所给A、B、C、D四个选项中选出一个最佳答案。
There was a bookseller who did not like to pay for anything. One day a big box of books fell on his1 .
His wife asked him to see the2and show it to him.
“No,” he said, “I'll wait3 he comes to our shop next time. Then I'll ask him4 my foot. If I go to see him, I shall have to5.”
The next day the doctor came to the shop to 6some books. The bookseller told the doctor about his 7foot. The doctor looked at it and then took out a piece of paper and wrote 8 on it. “Buy this and put it on the foot before you go to bed every night.” he said.
“Thank you,” said the bookseller. “And now, sir, here are your 9.”
“How much?” asked the doctor.
“ 10.”
“Good,” said the doctor. “I shall not have to pay you 11today.”
“12?” asked the bookseller.
“I have examined your foot. I want two pounds13that. If people come to my house, I ask them to pay one pound for a small thing like that.14when I go to their houses, I usually charge (索价) two pounds. And I came here today, 15 I? Bye-bye!”
—Wow! beautiful music! I like the concert very much.
—I think everybody will have wonderful time tonight.
—Wow! beautiful music! I like the concert very much.
—I think everybody will have wonderful time tonight.
—Did you go to the zoo yesterday?
—Yes. The bus trip us about 4 hours. There was too much traffic on the road.
3.填空题- (共4题)
（1）写出该反应的化学方程式 ；
（2）a试管中气体的化学式为 ；
（3）电解过程中，没有发生变化的微粒有（写微粒名称） ；
（4）该实验可以得出如下结论：I．水是由 组成的；II． 。
（1）t1℃时A、B、C三种物质的溶解度由大到小的顺序是 。
（2） ℃时能配制溶质质量分数相等的A和B的饱和溶液
（3）t1℃时30 g A物质加入到50 g水中形成的溶液质量是 g
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【1】题量占比
单选题:(12道)
选择题:(10道)
填空题:(4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：9
7星难题：0
8星难题：5
9星难题：2