大学英语六级考试命题改革与预测试卷

出版时间：2009-6  出版社：吉林出版集团  作者：卢小军|主编:马德高  页数：304  字数：50000  
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内容概要

CET-4：听力短对话第16题，听力长对话Conversation One，仔细阅读Passage Tw0，翻译第89题　　CET-6：写作，听力短对话第13题，听力长对话Conversation One．听力短文Passage Two，仔细阅读Passage One

作者简介

卢小军 上海交通大学外国语学院优秀教师，上海外国语大学英语语言文学专业硕士。曾在多所著名培训机构和学校任教，主讲大学英语四、六级，考研英语，雅思等课程。主编《（全新版）大学英语综合教程全程导读》（1-4册）和《15天征服英语六级一阅读》、《15天征服英语六级一词

书籍目录

大学英语六级考试命题改革与预测试卷 Model Test One大学英语六级考试命题改革与预测试卷 Model Test Two大学英语六级考试命题改革与预测试卷 Model Test Three大学英语六级考试命题改革与预测试卷 Model Test Four大学英语六级考试命题改革与预测试卷 Model Test Five大学英语六级考试命题改革与预测试卷 Model Test Six大学英语六级考试命题改革与预测试卷 Model Test Seven大学英语六级考试命题改革与预测试卷 Model Test Eight大学英语六级考试命题改革与预测试卷 Model Test Nine大学英语六级考试命题改革与预测试卷 Model Test Ten大学英语六级考试命题改革与预测试卷答案详解大学英语六级考试高频词汇大学英语六级考试临考点津大学英语六级考试热点预测作文大学英语六级考试听力特训

章节摘录

　　Biotechnologists have developed genetically modified rice that is fortified with beta-carotene（β-胡萝卜素）——which the body converts into vitamin A —— and additional iron,and they are working on other kinds ofnutritionally improved crops. Biotech can also improve farming productivity in places where food shortages arecaused by crop damage attribution to pests, drought, poor soil and crop viruses, bacteria or fungi（真菌）.　　Damage caused by pests is incredible. The European corn borer, for example, destroys 40 million tons ofthe worlds corn crops annually,about 7% of the total. Incorporating pest-resistant genes into seeds can helprestore the balance.In trials of pest-resistant cotton in Africa, yields have increased significantly. So far, fearsthat genetically modified, pest-resistant crops might kill good insects as well as bad appear unfounded.　　Viruses often cause massive failure in staple crops in developing countries. Two years ago, Africa lostmore than half its cassava（树薯）crop——a key source of calories —— to the mosaic virus. Genetically modified,virus-resistant crops can reduce that damage,as can drought-tolerant seeds in regions where water shortageslimit the amount of land under cultivation. Biotech can also help solve the problem of soil that contains excessaluminum,which can damage roots and cause many staple-crop failures. A gene that helps neutralize aluminumtoxicity（毒性） in rice has been identified.　　Many scientists believe biotech could raise overall crop productivity in developing countries as much as25 % and help prevent the loss of those crops after they are harvested.　　Yet for all that promise, biotech is far from being the whole answer. In developing countries, lost crops are onlyone cause of hunger. Poverty plays the largest role. Today more than 1 billion people around the globe live on lessthan 1 dollar a day. Making genetically modified crops available will not reduce hunger if farmers cannot afford togrow them or if the local population cannot afford to buy the food those farmers produce.　　Biotech has its own"distributionproblems. Private-sector biotech companies in the rich countries carryout much of the leading-edge research on genetically modified crops. Their products are often too costly forpoor farmers in the developing world ,and many of those products wont even reach the regions where they aremost needed. Biotech firms have a strong financial incentive to target rich markets first in order to help themrapidly recoup the high costs of product development. But some of these companies are responding to needs ofpoor countries.　　More and more biotech research is being carried out in developing countries. But to increase the impact ofgenetic research on the food production of those countries, there is a need for better collaboration between government agencies——both local and in developed countries——and private biotech firms.The ISAAA, for ex-ample, is successfully partnering with the US Agency for International Development,local researches and pri-vate biotech companies to find and deliver biotech solutions for farmers in developing countries. Will"Franken-foods"feed the world？　　Biotech is not a panacea （治百病的）, but it does promise to transform agriculture in many developing countries. If that promise is not fulfilled, the real losers will be their people, who could suffer for years to come.

编辑推荐

　　风靡全国，畅销十年，8000万读者的选择。　　2009年12月命中9道真题375分。　　CET-4：听力短对话第16题，听力长对话Conversation One，仔细阅读Passage Tw0，翻译第89题　　CET-6：写作，听力短对话第13题，听力长对话Conversation One.听力短文Passage Two，仔细阅读Passage One　　联手名师 权威研究 经典预测 频传命中喜报　　全国首创S-18高仿真真命题系统　　建立模型　　时文收集　　机器处理　　人工校检　　命题选材　　计算机辅助命题　　难度控制　　样本测试　　结果分析　　命题修正　　试题入库　　试题生成　　个案跟踪　　成绩分析　　对比真题　　对比成绩　　结果推论　　修正模型

用户评论 (总计15条)

•   上次考四级就是买了星火系列的。。。考过了。。。哈哈。。
  这次考六级也照样买他家人的。。他家人出版的卷子看着舒服啊。。
•   送货快，质量也很好，里面的赠品也很实用。
  听力貌似有些偏简单
•   英语词汇涵盖量广 容易记忆
•   附带的mp3光盘内容很丰富，我尤其喜欢的是里面的各种做题技巧，挺有用~~试题与答案是分开的，这样做起试卷来也很有真的感觉，呵呵，荐。
•   考前做,效果还不错~~
•   又便宜又好用，赞一个
•   感觉还不错哦~纸张也挺好的，一本本的分开，蛮方便的~
  就是貌似讲解的不是太全~
  还有买有看见那支所谓的作弊笔，有点小失望呢，本来还想拿来玩玩的~
  不过书好就OK啦~
•   喜欢临考点津，对应试很有帮助！
•   不错不错。。。但是为什么答案是订在一本的。。。
•   不错，货到的很快。质量也不错，是最新版得
•   5月17下的订单，5月25才拿到书，晕啊~~
•   卷子挺好的 发货速度也挺快的
•   题目要比真正考试简单得多 尤其是听力 比四级还简单！ 测不出真水平~
•   此书质量还凑合，但主要是答案给的不够好
•   快递超慢。