选词填空。根据短文内容，用方框中所给的单词填空。Both, inside, co

问题填空题

选词填空。

根据短文内容，用方框中所给的单词填空。

Both, inside, could, experiment, grown

    What is the greenhouse(温室)effect? Have you ever been inside agreenhouse, the allglass building where plants are     1    ?It's very warm, because the glass walls allow the sun's rays(光线)in but keep the heat
from getting out.
    Think of the earth as being    2    a large green-house. The gases act like a greenhouse's glass walls-they keep the heat from getting out into space,and the earth stays warm.
    Try,this easy     3    :Take two jars (大口瓶) and put a teaspoon of water in each jar. Put a lid (盖子)
on just one jar. Place __4   jars in a aunny place. After a few hours,check on the jars. You'll see that the
open jar hasn't changed,but the closed jar will be hot inside. What happened? The heat from the sun     5     not get out from the closed jar.

答案

1. grown 2. inside 3. experiment 4. both 5. could