欢迎来到上海新航道官网!英语高能高分,就上新航道!

4008-125-888

托福TPO22综合写作(含听力和阅读文本)

2015年05月20日 10:45来源:互联网作者:上海管理员

摘要:

小编为大家整理了全网最全托福TPO1-25综合写作文本,希望帮助考生更好的备考,争取理想成绩,实现留学梦想。下面是托福TPO22写作 部分。

TPO 22

Reading

Ethanol fuel, made from plants such as corn and sugar cane, has been advocated by some people as an alternative to gasoline in the United States. However, many critics argue that ethanol is not a good replacement for gasoline for several reasons.

First, the increased use of ethanol fuel would not help to solve one of the biggest environmental problems caused by gasoline use: global warming. Like gasoline, ethanol releases carbon dioxide into the atmosphere when it is burned for fuel and carbon dioxide is greenhouse gas: it helps trap heat in the atmosphere. Thus, ethanol offers no environmental advantage over gasoline.

Second, the production of significant amounts of ethanol would dramatically reduce the amount of plants available for uses other fuel. For example, much of the corn now grown in the United States is used to feed farm animals such as cows and chickens. It is estimated that if ethanol were used to satisfy just 10 percent of the fuel needs in the United States, more than 60 percent of the corn currently grown in the united stated would have to be used to produce ethanol. If most of the corn were used to produce ethanol, a substantial source of food for animals would disappear.

Third, ethanol fuel will never be able to compete with gasoline on price. Although the prices of ethanol and gasoline for the consumer are currently about the same, this is only because of the help in the form of tax subsidies given to ethanol producers by the United States government. These tax subsidies have cost the United States government over $11 billion in the past 30 years. If the United States government were to stop helping producers in this way, the price of ethanol would increase greatly.

Listening

Ethanol actually is a good alternative to gasoline, although you just read three reasons why it’s not a good alternative, not one of these three reasons is convincing.

First, the increased use of Ethanol fuel will not add to global warming. It’s true that, when Ethanol is burned, it releases carbon dioxide into the atmosphere, but as you read, Ethanol is often made from plants such as corn. Well, the process of growing the plants counteracts this release of carbon dioxide. Let me explain. Every growing plant absorbs carbon dioxide from the air as part of its nutrition. So growing plants for Ethanol production actually removes carbon dioxide from the atmosphere.

Second, large scale production of Ethanol doesn’t have to reduce the sources of food for animals. That’s because we can produce Ethanol using cellulose, cellulose is the main component of plants’ cell walls, and you’ll find most cellulose in those parts of plants that are not eaten by animals. So, since we can produce Ethanol from the plant parts that aren’t eaten, the amount of animal feed that is available will not be reduced.

Third, in the future, Ethanol will be able to compete with gasoline in terms of price. It’s true that government subsidies make Ethanol cheaper than it would normally be, but this support won’t always be needed. Once enough people start buying Ethanol, Ethanol producers will increase their production of Ethanol. Generally, increased production of products leads to a drop in its price. So the price of Ethanol will go down as more of it becomes available. Studies show that, if Ethanol production could be three times greater than it is now, the cost of producing a unit of Ethanol will drop by forty percent.

请加sunny老师(微信号:shnc_2018

百人留学备考群,名师答疑,助教监督,分享最新资讯,领取独家资料。扫码免费加入

免费资料领取

免责声明
1、如转载本网原创文章,请表明出处;
2、本网转载媒体稿件旨在传播更多有益信息,并不代表同意该观点,本网不承担稿件侵权行为的连带责任;
3、如本网转载稿、资料分享涉及版权等问题,请作者见稿后速与新航道联系(电话:021-64380066),我们会第一时间删除。

免费在线模考

姓名:

电话:

立即测试

制作:每每

旗舰校区:上海市徐汇区裕德路126号
电话:4008-125-888 集团客服热线:400-020-3000 传真:+021-61208858
版权所有:新航道(北京)管理咨询有限公司 京IPC备05069206

-