19.Most people know something about the green house effect.Factories sent gases such as carbon dioxide,or CO2,into the atmosphere,the air around the earth.In the past,this wasn't a problem because trees absorbed,or drank in CO2.But now people are cutting down billlions of trees in many countries.At the same time,factories are sending more CO2into the atmosphere.It's difficult to believe,but factories put billions of tons of CO2into the atmosphere every year!One ton is 2000pounds,so this is a lot of pollution.There is too much CO2and there aren't enough trees,so the world is getting warmer.In other words,we have a greenhouse effect.This is terrible for the environment.
What can we do about this?First,we can stop using so much coal and oil.We can learn to use different kinds of energy:the sun,wind,sand heat from volcanoes and from inside the earth.Second,instead of cutting down trees,we should plant more trees.One tree can absorb(吸收) ten pounds of carbon dioxide every year.
The trees are good for the earth's atmosphere and for Guatemala.In small towns and villages in Guatemala,most women are poor and have hard lives.Trees help them in three ways.First,the Connecticut factory pays them to plant the trees.Their pay is corn,not money.The corn is good for their childrn.Second,these women know a lot about their environment.They know where to plant,when to plant,and what kinds of trees to plant.For example,they plant many fruit trees.The fruit gives them vitamins to their families'diets.Other trees are good for firewood.In a few years,the women won't spend so much time walking for wood.Third,all these trees are good for the soil.Now rain can't wash the soil down the mountains so easily.
This plan isn't enough to stop the greenhouse effect.But it's a beginning.The women of Guatemala are helping themselves and helping their environment.As one woman says,"We're planting for our famillies,for our children."
65.Is there too much co2in the atmosphere now?Yes./Yes,there is.
66.How much can a tree absorb carbon dioxide a year?Ten pounds (of carbon dioxide)..
67.How many good points can women in Guatemala get from planting trees?Three.
68.What can we do to stop the world getting warmer according to Paragraph 2?To stop using so much coal and oil and plant more trees.
69.What does the passage mainly talk about?The greenhouse effect and what to do with this/it.
分析 本文讲述的是温室效应已经应该采取的措施.因为空气中二氧化碳的增加和树木的减少,世界正在变暖.首先,我们可以停止使用这么多的煤和石油,应该种更多的树,一棵树每年能吸收十磅的二氧化碳.
解答 65.Yes./Yes,there is.细节理解题.根据There is too much CO2and there aren't enough trees可知现在大气中有很多的 二氧化碳,故答案为:Yes./Yes,there is.
66.Ten pounds (of carbon dioxide).细节理解题.根据One tree can absorb(吸收) ten pounds of carbon dioxide every year.可知一棵树每年能吸收十磅的二氧化碳,故答案为:Ten pounds (of carbon dioxide).
67.Three.细节理解题.根据Third,all these trees are good for the soil可知Guatemala妇女能从植树中得到三种好处,故答案为:Three.
68.To stop using so much coal and oil and plant more trees.细节理解题.根据First,we can stop using so much coal and oil.Second,instead of cutting down trees,we should plant more trees.可知为了阻止气候变暖我们应该少使用煤炭和石油并且多种树,故答案为:To stop using so much coal and oil and plant more trees.
69.The greenhouse effect and what to do with this/it.主旨大意题.根据文章内容可知本文讲述的是温室效及已经应该采取的措施,故答案为:The greenhouse effect and what to do with this/it.
点评 做题时首先要仔细阅读短文,掌握大意,然后结合具体的题目,找出相关信息,就可以确定正确答案.