17.A new study showed that one of the best ways to control greenhouse gas emissions(温室气体排放) is to eat less meat.In fact,the study showed that meat consumption(食用量) in developed countries should be cut by 50% per person before 2050.
Meat production and consumption are expected to rise very quickly to a high level by 2050.That's because the global population is expected to grow from the present 7billion to 9billion.But also,the diets of people in many developing countries are changing.Countries that are developing rapidly are seeing a fast rise in protein consumption,especially red meat.
Dr.Eric Davidson,the president and senior scientist at the Woods Hole Research Center in Massachusetts,said changing the way people eat can have a great effect on greenhouse gas emissions.People in developed countries,he said,already eat much more protein than the daily requirement.
"In the developed world,there is large room for us to manage the frequency with which we eat meat.If there is a growing need for meat,that is going to end up requiring use of more nitrogen fertilizer(肥料) and production of more livestock manure(家畜粪肥),both of which end up resulting in release of various forms of greenhouse gases to the atmosphere,"he said.
Davidson said farmers should be encouraged to use fertilizers and manure in a more careful way."If we want to meet the greatest goal of making harmful climate change under control,we need to improve the efficiency(效能) with which we use fertilizers in agriculture.We need to improve the efficiency of the management of manure.And we also need to consider changes in dietary patterns(饮食方式).And that means hopefully better diets in the developing world and better balanced diets in the developed world,"he said.
Even if it were possible to turn off all harmful greenhouse gas emissions today,he said climate change would continue."But that does not mean that we can do nothing for it now,because the sooner we start to take action,the more choices our children and grandchildren will have in terms of being able to feed themselves and have comfortable lifestyles without environmental degradation(退化),"he said.
28.According to the new study,eating less meat isD.
A.one of the best ways to keep healthy
B.an effective way to develop the economy
C.the best way to control greenhouse gas emissions
D.a good way to protect the environment
29.In paragraph 4,what does Dr.Eric Davidson mainly talked about?C
A.The harms of releasing various greenhouse gases
B.The side effects of producing fertilizers and manure
C.The effects of growing need for meat on the environment
D.The ways of managing the frequency of eating meat
30.The underlined word"it"in the last paragraph refers toB.
A.the environment
B.climate change
C.greenhouse gases
D.the lifestyle
31.In Dr.Eric Davidson's opinion,C.
A.it's important to encourage farmers to use fertilizers
B.our future generations will live more comfortably
C.a balanced diet is helpful in controlling climate change
D.it's completely possible to control greenhouse gas emissions.
分析 本文是一篇科教类阅读,主要介绍了一项新的研究发现--少吃肉可以减少温室气体的排放.
解答 28-31 DCBC
28题答案:D考查细节推理,根据文章第一段第一句的A new study showed that one of the best ways to control greenhouse gas emissions(温室气体排放) is to eat less meat.一项新的研究表明控制温室气体排放的最佳方法之一是少吃肉.可知本题答案为D选项.
29题答案:C考查细节推理,根据文章第四段的If there is a growing need for meat,that is going to end up requiring use of more nitrogen fertilizer(肥料) and production of more livestock manure(家畜粪肥)…"如果对于肉类的需求不断增长,那么最终会导致肥料的更多使用与更多家畜粪肥的产生…"可知本段主要讲的是"不断增长的肉类需求对于环境的影响",故本题答案为C选项.
30题答案:B考查细节推理,根据倒数第一段的he said climate change would continue.But that does not mean that we can do nothing for it now…"他说气候改变还将继续,但是那并不意味着现在我们对此束手无策…"可知it指的就是前面的"气候改变",故本题答案为B选项.
31题答案:C考查细节推理,根据文章倒数第二段的If we want to meet the greatest goal of making harmful climate change under control…And we also need to consider changes in dietary patterns(饮食方式).And that means hopefully better diets in the developing world and better balanced diets in the developed world."如果我们想要达到使有害的气候改变处于控制的伟大目标…我们也需要考虑我们的饮食方式,那意味着发展中国家更好的饮食方式以及发达国家更加平衡的饮食方式."可知"均衡饮食有助于控制气候改变",故本题答案为C选项.
点评 本文是一篇科教类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.