Question

【题目】 Global warming is happening all around us. This experiment helps you learn how a greenhouse works, and how greenhouse gases influence the earth’s atmosphere (大气).

What You Need:

Two thermometers

A notebook

A pencil or pen

A clear container

A watch or clock

A sunny area

What You Do:

1. Put the thermometers in direct sunlight. Let them sit in the sun for three minutes.

2. Draw two columns (栏), “Thermometer A” and “Thermometer B”, in the notebook.

3. After the three minutes, read and record the time and temperatures in the notebook.

4. Place one of the thermometers in the container and close it tightly.

5. Record the temperatures of the thermometers every ten minutes.

6. Discuss how the container influences the temperature.

What’s Going On?

The temperature outside the container is changing, as the warm air mixes with the passing cooler air. The air inside the container can’t mix with the air outside — it just gets warmer as the sunlight heats it up. A greenhouse works in a similar way: sunlight creates heat that can’t get out of the glass.

【1】What do you need in the experiment?

A.A dark room.B.A paper box.C.Some water.D.Two thermometers.

【2】How often do you record the temperatures of the thermometers?

A.Every five minutes.B.Every ten minutes.

C.Every fifteen minutes.D.Every twenty minutes.

【3】What can you learn from the experiment?

A.When the glass breaks.B.Why the sunlight is helpful.

C.How a greenhouse works.D.What the temperature changes.

Answer 1

【答案】

【1】D

【2】B

【3】C

【解析】

本文是一篇应用文，是一个实验指导，指导大家如何做实验了解温室气体是如何作用并影响大气的。

【1】细节理解题。根据What You Need: Two thermometers，可知需要两支温度计，故选D。

【2】细节理解题。根据5. Record the temperatures of the thermometers every ten minutes，可知每十分钟要记录一次温度计的温度，故选B。

【3】细节理解题。根据This experiment helps you learn how a greenhouse works，可知通过实验我们可以了解温室气体是如何作用的，故选C。