题目
Exercise 7-|||-A.afford B.alarming VC.dramatically D.environmental E.feed VF fertilizer-|||-G.fiercely H.quantities 1.results J.superinsects h K.unproductive-|||-Farming today-|||-When modern farming methods were introduced in the 1950s and 1960s.people believed they-|||-were the answer to world food shortages.Over the next few decades.food production did increase-|||-However,the modern methods did not solve the problem of hunger-over a billion people still-|||-go hungry every day-and they created many other serious 2 problems.-|||-According to modem methods,farmers plant only one crop in large and use only the-|||-new "improved" seed types. These seeds require farmers to use lots of chemical 4 to make-|||-the seeds grow and chemical pesticides to kill harmful insects.They also require farmers to irrigate-|||-(灌溉)with lots of water.Farmers and scientists now realize that these methods may raise-|||-production immediately. b they have negative effects in the long term.For example.planting the-|||-same crop repeatedly and using lots of chemical fertilizers makes the soil 5 Also.the farming-|||-of very large, open fields 6 in the loss of valuable top soil.-|||-There are often negative effects outside the farm as well. Farri irrigation uses up enormous-|||-amounts of water,causing water shortages in nearby cities and towns.The heavy use of fertilizers-|||-and pesticides leads to the pollution of groundwater. rivers,lakes.and even the ocean.It also leads-|||-to the development of 7 that survive all pesticides.-|||-For farmers in the developing countries,there are other kinds of problems.Often the only seeds-|||-available are the modern seed types.However.they may not be able to 8 to buy the fertilizers-|||-and pesticides that these seeds require.There also may not be much water available or the farmers-|||-may not be able to pay for irrigation.Without chemicals and water.these seeds will never produce-|||-much. especially since poor farms are often located in dry areas.Thus,many farmers are not even-|||-able to 9 their own families.-|||-Fortunately.not all farms today fit this 10 picture. In both industrialized and developing-|||-countries,more and more farmers are turning to organic farming methods.
题目解答
答案
解析
步骤 1：理解文章背景
文章讨论了现代农业方法在20世纪50年代和60年代被引入，虽然食物产量有所增加，但并未解决饥饿问题，反而带来了许多其他严重问题。
步骤 2：分析问题
问题要求我们根据文章内容选择合适的单词填空，以使句子通顺并符合上下文意思。
步骤 3：逐句分析并选择答案
1. 根据前文，现代化农业方法被引进，因此食物产量大幅增加。故选C。
2. 依据后文所讲述的对于化肥、杀虫剂、水的大量使用以及对于土壤的破坏，可知此处为环境问题。故选D。
3. 句意：农民们只大量种植一种农作物。in large quantities 意为"数量多的"，故选H。
4. 句意：这些种子需要农民施用很多化肥。故选F。
5. 句意：持续种植一种作物和施用大量化肥会使土地减产。unproductive意为不生产的"，故选K。
6. 句意：在大而空旷的土地上种植导致了有价值土壤的流失。result in意为"导致"，故选I。
7. 依据后文survive all pesticides"，可知这里所说的是不怕杀虫剂的害虫。故选J。
8. 句意：发展中国家的农民或许没有足够的钱去买与种子匹配的化肥和杀虫剂。故选A。
9. 句意：许多农民甚至无法养活家庭。故选E。
10. 句意：幸运的是，不是所有农民都符合这种令人担忧的情况。alarming意为"令人担忧的"，故选B。
文章讨论了现代农业方法在20世纪50年代和60年代被引入，虽然食物产量有所增加，但并未解决饥饿问题，反而带来了许多其他严重问题。
步骤 2：分析问题
问题要求我们根据文章内容选择合适的单词填空，以使句子通顺并符合上下文意思。
步骤 3：逐句分析并选择答案
1. 根据前文，现代化农业方法被引进，因此食物产量大幅增加。故选C。
2. 依据后文所讲述的对于化肥、杀虫剂、水的大量使用以及对于土壤的破坏，可知此处为环境问题。故选D。
3. 句意：农民们只大量种植一种农作物。in large quantities 意为"数量多的"，故选H。
4. 句意：这些种子需要农民施用很多化肥。故选F。
5. 句意：持续种植一种作物和施用大量化肥会使土地减产。unproductive意为不生产的"，故选K。
6. 句意：在大而空旷的土地上种植导致了有价值土壤的流失。result in意为"导致"，故选I。
7. 依据后文survive all pesticides"，可知这里所说的是不怕杀虫剂的害虫。故选J。
8. 句意：发展中国家的农民或许没有足够的钱去买与种子匹配的化肥和杀虫剂。故选A。
9. 句意：许多农民甚至无法养活家庭。故选E。
10. 句意：幸运的是，不是所有农民都符合这种令人担忧的情况。alarming意为"令人担忧的"，故选B。