1、雅思（写作）模拟试卷 125及答案与解析 1 Modern technology, such as fertilizer, pesticide and modern machinery can feed the world better. However, it is negative to human health. To what extent do you agree or disagree with this opinion? 2 Some people think that genetically modified plants may be harmful and should b
2、e banned. What do you think? 雅思（写作）模拟试卷 125答案与解析 1 【正确答案】 With the rapid development of science, many modern agricultural technologies, such as fertilizer and modern machinery, have been applied with the view to enhance the output of produces. Undoubtedly, this increases the volume of crops. But in
3、the meanwhile, some people show their great concerns about the negative effects aroused by modern agriculture. Firstly, the utilization of fertilizer causes great changes of the structure of soil. In the long run, this will make the soil infertile, which means that we can only have a good harvest wi
4、th the help of fertilizer. Furthermore, the change of the structure of soil can cause serious environment problem. Secondly, pesticide can kill most of the insects harmful to crops. But at the same time, it also kills many insects, which are friendly to the crops and human beings. The abuse of pesti
5、cide also seriously threatens the health of human beings. When people eat the vegetable and crops with pesticide sediment, their health will be in danger and their digest system and neural system will be damaged. Finally, the use of modern machinery saves people a lot of time and energy. But this wi
6、ll cause serious environmental problems. In the ancient times, most of the field labour is undertaken manually or with the help of some tamed animals, such as cattle and horses. But now, modern machinery takes the place of human beings and animals and plays a major role in modern agriculture, which
7、will cause serious environment pollution and the scarcity of natural resources. To sum up, the employment of modern technology helps to improve peoples living, but meanwhile, we should raise the awareness of protecting our environment and us and takes some measures to ensure peoples health. 2 【正确答案】
8、 Genetically-modified (GM) plants are part of the latest developments in our ever-changing world. Some people are against them because they are concerned that such plants may cause unpredictable problems. I believe this concern is totally unnecessary, as GM plants have the following three advantages
9、. First, research and development of GM plants will help us produce better foodstuffs in terms of quantity and Quality. For example, disease-resistant rice with high yields can help eradicate famines and food shortages that have been plaguing the people of many countries. With GM piant technology, w
10、e can develop fish without bones, apples Sat taste of meat and other delicious and exotic foods. The possibilities, to some extent, are only limited by mans imagination. Second, GM technology opens a new dimension for scientific research. Scientists have been working hard to decipher the secrets hid
11、den in all organisms. GM plant technology will help them to better understand how nature works. Some day, I believe, we will be able to decode all plants genetic makeup, and bring the whole plant growth processfrom blossoming to fruit bearing under our control. Third, GM plants may assist us to achi
12、eve a perfect ecological balance by producing species to cover the gaps in the biological chain due to wanton abuse of natural resources by human activities. We can develop organisms that can decompose and digest the garbage produced by mankind to make this world greener and cieaner. Of course, GM plants, like other scientific developments, may cause some problems. But I believe that, with careful regulation and control, the advantages will far outweigh the disadvantages.
