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D 跨学科
Lin Xin’s study group carries out an experiment (实验) to know how to take salt from water. Here is their report.
Preparation
We chose a sunny day, prepared a large bowl, some water, a tall glass, some salt, some plastic wrap (塑料膜) and a rubber (橡胶) band.
Steps
1. Put the water into the large bowl. Add the salt to it.
2. Put the glass in the middle of the bowl. The top of the glass must be above the water.
3. Cover the bowl and the glass with the plastic wrap. Use the rubber band to make sure there is no space between the wrap and the
bowl. Put a stone on the top of the plastic wrap.
4. Put the bowl outside in the sun.
Finding and feeling
When we took the plastic wrap off the bowl, we saw water in the glass. When we tasted the water, we found that there wasn’t any salt in it.
John: We searched for some information online and we found out how it works. When you put the bowl outside in the sun, the water gets hot and then becomes gas (气体), but the salt doesn’t become gas. The salt stays in the bowl, and the gas rises. Then it becomes
(
A. Rainy and cool. B. Snowy and cold. C. Windy and cool. D. Sunny and hot.
(
a.
b.
c.
d.
A. a-b-c-d B. b-a-c-d C. c-b-d-a D. c-a-d-b
(
A. gas B. salt C. stone D. water
(
A. Physics (物理). B. Geography. C. Biology. D. Arts.
Lin Xin’s study group carries out an experiment (实验) to know how to take salt from water. Here is their report.
Preparation
We chose a sunny day, prepared a large bowl, some water, a tall glass, some salt, some plastic wrap (塑料膜) and a rubber (橡胶) band.
Steps
1. Put the water into the large bowl. Add the salt to it.
2. Put the glass in the middle of the bowl. The top of the glass must be above the water.
3. Cover the bowl and the glass with the plastic wrap. Use the rubber band to make sure there is no space between the wrap and the
bowl. Put a stone on the top of the plastic wrap.4. Put the bowl outside in the sun.
Finding and feeling
When we took the plastic wrap off the bowl, we saw water in the glass. When we tasted the water, we found that there wasn’t any salt in it.
John: We searched for some information online and we found out how it works. When you put the bowl outside in the sun, the water gets hot and then becomes gas (气体), but the salt doesn’t become gas. The salt stays in the bowl, and the gas rises. Then it becomes
D
again and falls into the glass. How amazing it is!(
D
) 1. What kind of weather is necessary for doing this experiment?A. Rainy and cool. B. Snowy and cold. C. Windy and cool. D. Sunny and hot.
(
C
) 2. 新考法·逻辑排序 What’s the right order of the experiment?a.
b.
c.
d.
A. a-b-c-d B. b-a-c-d C. c-b-d-a D. c-a-d-b
(
D
) 3. Which word can be put in the D
?A. gas B. salt C. stone D. water
(
A
) 4. Which subject may the experiment be about?A. Physics (物理). B. Geography. C. Biology. D. Arts.
答案
D【主旨大意】本文主要介绍了一个从水中提取盐的实验。
1. D 【点拨】细节理解题。根据“We chose a sunny day”可知，需要在晴天做这个实验。故选D。
2. C 【点拨】逻辑排序题。根据“1. Put the water into the large bowl. Add the salt to it.”可知，第一步是把水倒入大碗里，并把盐加进去，c排第一，排除A和B；根据“2. Put the glass in the middle of the bowl. The top of the glass must be above the water.”可知，第二步是把杯子放在碗的中间，且杯子的顶部一定要在水面之上，b排第二，排除D。故选C。
3. D 【点拨】推理判断题。根据“When you put the bowl outside in the sun...again and falls into the glass.”可知，它会再次变成水，最后落入玻璃杯中，所以空处使用water。故选D。
4. A 【点拨】推理判断题。本文主要介绍了一个实验，实验中涉及蒸发这一现象，属于物理过程，因此是与物理相关的实验。故选A。
1. D 【点拨】细节理解题。根据“We chose a sunny day”可知，需要在晴天做这个实验。故选D。
2. C 【点拨】逻辑排序题。根据“1. Put the water into the large bowl. Add the salt to it.”可知，第一步是把水倒入大碗里，并把盐加进去，c排第一，排除A和B；根据“2. Put the glass in the middle of the bowl. The top of the glass must be above the water.”可知，第二步是把杯子放在碗的中间，且杯子的顶部一定要在水面之上，b排第二，排除D。故选C。
3. D 【点拨】推理判断题。根据“When you put the bowl outside in the sun...again and falls into the glass.”可知，它会再次变成水，最后落入玻璃杯中，所以空处使用water。故选D。
4. A 【点拨】推理判断题。本文主要介绍了一个实验，实验中涉及蒸发这一现象，属于物理过程，因此是与物理相关的实验。故选A。
