(B)

Materials:
◇A wide glass jar with a lid
◇Very hot water
◇Some ice
◇A match
Very important! Only parents deal with matches!!!
Steps:
1. Turn the lid upside down and fill it with ice.
2. Fill the jar about 1.5 cm with very hot water.
3. Ask your parent to light a match. Then blow out the match just above the jar. Hold the smoking stick inside. (You want smoke from the match to fill the jar.)
4. Quickly put the lid with ice on the jar. Cover the jar completely.
5. Let the cloud form for a few minutes. Then take the lid off and meet the cloud!
Result:
A real cloud comes up. But it is not round and it disappears (消失) soon.
(
A. A glass jar.
B. Very hot water.
C. Some ice.
D. Parents' help.
(

A. ①②③⑤④
B. ①③⑤②④
C. ①③⑤④②
D. ①⑤②③④
(
A. A real cloud appears.
B. The cloud is round.
C. The cloud lasts a few hours.
D. The cloud doesn't disappear.
Materials:
◇A wide glass jar with a lid
◇Very hot water
◇Some ice
◇A match
Very important! Only parents deal with matches!!!
Steps:
1. Turn the lid upside down and fill it with ice.
2. Fill the jar about 1.5 cm with very hot water.
3. Ask your parent to light a match. Then blow out the match just above the jar. Hold the smoking stick inside. (You want smoke from the match to fill the jar.)
4. Quickly put the lid with ice on the jar. Cover the jar completely.
5. Let the cloud form for a few minutes. Then take the lid off and meet the cloud!
Result:
A real cloud comes up. But it is not round and it disappears (消失) soon.
(
D
)4. Which is very important when you use matches in the experiment?A. A glass jar.
B. Very hot water.
C. Some ice.
D. Parents' help.
(
B
)5. What is the right order of "making the cloud"?A. ①②③⑤④
B. ①③⑤②④
C. ①③⑤④②
D. ①⑤②③④
(
A
)6. What is the result of the experiment?A. A real cloud appears.
B. The cloud is round.
C. The cloud lasts a few hours.
D. The cloud doesn't disappear.
答案:4. D 5. B 6. A
解析:
翻译:
(B)
材料:
- 一个带盖子的广口玻璃罐
- 非常热的水
- 一些冰
- 一根火柴
非常重要!只有父母可以使用火柴!!!
步骤:
1. 将盖子倒过来,在里面装满冰。
2. 往罐子里倒入约1.5厘米深的非常热的水。
3. 让你的父母点燃一根火柴。然后在罐子正上方吹灭火柴。把还在冒烟的火柴梗拿在罐子里(你想要火柴的烟充满罐子)。
4. 迅速把装着冰的盖子盖在罐子上。把罐子完全盖住。
5. 让云形成几分钟。然后取下盖子,看看云!
结果:
一朵真正的云出现了。但它不是圆形的,而且很快就消失了。
4. 在实验中使用火柴时,什么是非常重要的?
A. 一个玻璃罐。
B. 非常热的水。
C. 一些冰。
D. 父母的帮助。
5. “制造云”的正确顺序是什么?
A. ①②③⑤④
B. ①③⑤②④
C. ①③⑤④②
D. ①⑤②③④
6. 实验的结果是什么?
A. 一朵真正的云出现了。
B. 云是圆形的。
C. 云持续几个小时。
D. 云不会消失。
(B)
材料:
- 一个带盖子的广口玻璃罐
- 非常热的水
- 一些冰
- 一根火柴
非常重要!只有父母可以使用火柴!!!
步骤:
1. 将盖子倒过来,在里面装满冰。
2. 往罐子里倒入约1.5厘米深的非常热的水。
3. 让你的父母点燃一根火柴。然后在罐子正上方吹灭火柴。把还在冒烟的火柴梗拿在罐子里(你想要火柴的烟充满罐子)。
4. 迅速把装着冰的盖子盖在罐子上。把罐子完全盖住。
5. 让云形成几分钟。然后取下盖子,看看云!
结果:
一朵真正的云出现了。但它不是圆形的,而且很快就消失了。
4. 在实验中使用火柴时,什么是非常重要的?
A. 一个玻璃罐。
B. 非常热的水。
C. 一些冰。
D. 父母的帮助。
5. “制造云”的正确顺序是什么?
A. ①②③⑤④
B. ①③⑤②④
C. ①③⑤④②
D. ①⑤②③④
6. 实验的结果是什么?
A. 一朵真正的云出现了。
B. 云是圆形的。
C. 云持续几个小时。
D. 云不会消失。