1.科学探究题- (共1题)
提出问题:……
建立假设:袋内气体可能是二氧化碳。
实验方案:将燃着的木条伸入已收集满该气体的集气瓶中,观察现象。
获得证据:……
得出照论:……
(1)他提出的问题是____________________。
(2)其他同学一致认为该实验方案是不合理的,正确的实验方案是:将收集的该气体 ______ _,观察现象。
2.计算题- (共1题)
(1)“石头纸”中的碳酸钙属于______(选填“单质”、“氧化物”、“酸”、“碱”或“盐”)。
(2)为了测定某种“石头纸”中碳酸钙的质量分数,某同学取该种“石头纸”样品l0克,加人100克7.3%的盐酸溶液充分反应。反应后烧杯内剩余物质的总质量为106.48克;经过滤干燥后称得固体残渣质量为2克;
该同学想出甲、乙、丙三种计算方案:
甲:根据“反应后烧杯内剩余物质的总质量106 .48克,可知二氧化碳的质量,……”求解;
乙:根据“反应后经过滤干燥后称得固体残渣的质量2克,可知样品中碳酸钙的质量, ……”求解;
丙:根据“100克7.3%的盐酸溶液,可知参加反应的氯化氢质量,……”求解。
以上方案中,不正确的是_____ _____。
(3)根据上述的某个正确方案计算该“石头纸”中碳酸钙的质量分数。_______________
3.单选题- (共3题)
A. 由三种元素组成 B. 氢元素所占质量分数最小
C. 属于有机物 D. 碳、氢、氮三种元素的质量比为3:4:1

A.原子、原子核、核外电子 | B.原子核、原子、核外电子 |
C.原子、核外电子、原子核 | D.核外电子、原子核、原子 |
4.选择题- (共6题)
SUNNY SCHOOL
We are a bilingual (双语) school for children of 6-15. We want a cook, a library assistant, a sports coach and a language teacher.
Job | Age | Language | Skill | Other term(其它条件) |
Cook | 25-40 | Chinese | Cooking both Chinese food and western food | Healthy |
Library assistant | 20-35 | Chinese English | Having the knowledge (知识) of different kinds of books | Careful |
Sports Coach | 20-40 | Chinese English | Majoring in (主修) physical education | Healthy, strong |
Teacher | — | Chinese English | Majoring in English | — |
Last Saturday, Tony went to see Benny. But he didn't know 1 Benny lived. 2 the way, he stopped in front of a yellow house, and asked an old woman the 3 to Benny's house. "His house is not far from my house," said the woman. "It's behind the trees. But you can't get there 4 You can go there by bus. It'll 5 you hours to get there 6 foot. " "What's 7with her?" Tony thought, "I can see Benny's house from here now. It's behind the 8 ."
Then Tony walked to the other side of the trees. He found the old woman was 9There was a river in front of him, and he couldn't see a boat. The house was on the other side of the 10.
Some children want to be writers some day. They mean that they want to write stories or books for people to read. That's good! It's good to write something for people to read! But they should know that they need to be good readers first before they really are good writers. They should read a lot of books, and read for hours and hours every day instead (代替) of watching TV and spending a lot of time playing games when they are free.
If you are a good reader, it doesn't take you long to do the reading homework. Then you have time to read many other books for fun. Because you read so well, you have more fun in reading and you want to look for more books to read.
Before you decide to be a good writer, you'd better say to yourself, "I must read and read and read more and more!"
Some children want to be writers some day. They mean that they want to write stories or books for people to read. That's good! It's good to write something for people to read! But they should know that they need to be good readers first before they really are good writers. They should read a lot of books, and read for hours and hours every day instead (代替) of watching TV and spending a lot of time playing games when they are free.
If you are a good reader, it doesn't take you long to do the reading homework. Then you have time to read many other books for fun. Because you read so well, you have more fun in reading and you want to look for more books to read.
Before you decide to be a good writer, you'd better say to yourself, "I must read and read and read more and more!"
5.填空题- (共3题)
(1)高温可以使铁轨接口处的铁___ _(选填“熔化”或“汽化’’),冷却后达到焊接的目的。
(2)点燃铝热剂反应的化学方程式为:2Al+Fe2O3

(1)粗盐提纯的过程是______、过滤、蒸发。
(2)过滤操作需要用到的实验器材为烧杯、带铁固的铁架台、滤纸、玻璃棒和____ 。
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【1】题量占比
科学探究题:(1道)
计算题:(1道)
单选题:(3道)
选择题:(6道)
填空题:(3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:3
5星难题:0
6星难题:3
7星难题:0
8星难题:2
9星难题:0