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1、Unit 2 Working the land.阅读理解A体裁：说明文话题：农业词数：375时间：6Organic farming is a bigpicture exercise.Its not only targeted at this seasons results，but considers future generations.In the long run it makes better economic sense as well.But its main goal is to contribute to a healthier world.Studies conducted a
2、ll over the world have shown the effects that conventional chemical farming has on the environment.Certainly，chemical fertilizers，pesticides，and herbicides increase the quantity of a farms production.They help produce more grains and vegetables.But at what cost? A Swiss study showed that organic far
3、ming produces an average of 20% less than conventional methods.But the organically grown food contained 50% less fertilizer and 97% less pesticides.Though only a part of the amount of pesticides a farm uses actually does the job of killing bugs，all of it remains active in the soil for months or even
4、 years after application.Perhaps worse，each generation of pests is growing increasingly immune (免疫的)to the chemicals used.Its not even all about the food and the soil.The pesticides used in conventional agriculture are finally spilling their chemical residues(化学残留) into the waterways.It affects wild
5、life，soil and ecosystems as a whole.According to a Worldwatch paper，Deep Trouble: The Hidden Threat of Groundwater Pollution，poisonous chemicals are polluting groundwater on every inhabited continent，endangering the worlds most valuable supplies of freshwater.Perhaps not so intuitive，organic farming
6、 affects the air.“Organic agriculture can reduce greenhouse gas emissions by effectively locking more carbon into the soil rather than releasing it into the atmosphere，” found “Farming Systems Trial，” a 15year study.Organic agriculture even uses 50% less energy than conventional farming.How does org
7、anic farming deal with pests? Organic farmers intentionally build up populations of beneficial insects，such as ladybugs(瓢虫)，that eat other pests and control the growth of insects.Wildflowers create green belts that control the spread of weeds and themselves encourage the beneficial insects.Farmers h
8、ave to stick to strict standards and practices to earn the label “organic.” Looking forward，by promoting biological diversity and maintaining soil fertility，organic farming creates a natural balance that helps to get high quality food in healthy quantities year after year.1Which of the following can
9、 be the best title for the passage?AThe best ways to set up organic farmingBWhy organic farming benefits the environmentCThe history and development of organic farmingDHow to deal with pests and chemical residues答案B主旨大意题。本文通过几个方面说明有机农业为什么会对环境有好处。文章第一段为主题段，下面各段都是围绕这一主题段进行说明的。2It can be known from the
10、 passage that _Aapplicating pesticides will increase the number of pestsBorganic farming produces more greenhouse gas emissionsCconventional farming is better than organic farmingDthe organically grown food does good to peoples health答案D推理判断题。根据第二段最后一句But the organically grown food contained 50% les
11、s fertilizer and 97% less pesticides.可知，有机农产品含有的肥料少，含有的农药更少，由此可以推断，这种有机农产品对人的身体有益。3By writing Paragraph 3，the author mainly wants to tell us _Athe immune function of pestsBthe effect of chemical residuesCthe great harm of pesticidesDthe benefit of conventional agriculture答案C作者意图猜测题。文章第三段说明应用农药不仅会使害虫
12、产生免疫，而且还会污染水源，影响野生动物、土壤和生态系统。这一切都是应用农药所产生的巨大危害。故选C。B体裁：记叙文话题：人物词数：305时间：6At 80 years old，scientist Jane Goodall continues to enjoy the joy of discovery.“Trees can communicate with each other，” she said during her Nov.16，2014 China visit to celebrate the 20th anniversary of the China establishment of
13、 her youth organization Roots & Shoots，which has grown to more than 600 branches in the country among 150，000 active groups globally.Jane Goodall still travels 300 days a year in all around the world and says she absorbs energy from the inspired people she meets in each country.The elderly activist
14、and the youth take inspiration from each other.On Nov.16，2014，she visited the project of Roots & Shoots which was set up in Beijing.“She thought our project was great，” says 16yearold Beijing Experimental High School student Qi Zhengyang，whose group helps protect a wetlands in the suburbs of Beijing
15、.“She said were doing a good job.She paid attention to us.”Jane Goodall plans to continue to set up Roots & Shoots branches as many as possible throughout the world.“Ill go on as long as I can，” she says.“I hope I maintain physical health as long as possible because theres so much to do.” Her aspira
16、tion for the organization in China is to expand in rural areas.Most branches are in big cities as Beijing and Shanghai.It was publishing her findings about chimpanzees (My Friends the Wild Chimpanzees) more than half a century ago that made Jane Goodall a household name in the world.She was named United Nations Messenger of Peace in 2002.Some o
