现代大学英语精读6 课后答案 LESSON THREE.doc

lesson three at war with the planet与地球的战争.vocabularya. look up the following words and phrases. select the meaning that best suits the sentence in which each appears:1. to blanket: to cover with a thick layer2. niche: the specific space occupied by an organism within its habitat 3. elaborate: detailed and complicated; carefully prepared and finished4. property: an attribute, quality, or characteristic, esp. as determined by its effects on another substance5. progressively: increasingly; by degree6. closed: not communicating with or influenced by others7. mold: any fungus which can produce a downy or furry growth on the surface of organic matter . explain the following in your own words, bringing out any implied meanings:1. what people do may unintentionally cause droughts, floods and heat waves.2. the earth we see in photos, posters, and ads, which appears so beautiful, is not the true reflection of the world we live in; such image lulls us into complacency.3. human activities have taken place over such large areas and with such intensity that they have already caused disastrous effects on ecology.4. the fish could play its role because it became a necessary link with the processes preceding it and the processes following it in the ecological system.5. when cars are produced to serve such narrow purposes, it is not surprising that some of their characteristic qualities are harmful to the environment.6. the farmers applied more and more fertilizer, and the production did increase but not at the same rate as the increase of the fertilizer.7. people eat plants and animals, and their waste is flushed into the sewer system. after being processed, the waste is still waste. the residue will go into rivers, oceans and will have harmful effect on the aquatic ecosystem.8. if the ecosystems are not upset by outside intrusion, they will remain the same with very little change.9. the characteristics of the objects and materials in the technosphere are rapid change and great variety.10. if we take sides in the war of the two worlds, we are doing so at the risk of failing to have a clear understanding of the nature and cause of the war. thus, we lose the chance to really solve the grave environmental crisis. translate the following into chinese:a. phrases1. 生态小环境以及生活在小环境中的物种2. 寄生虫的栖息地3. 鱼鹰的猎食对象4. 封闭的循环流程5. 放射性极强的（核）废料6. 经过精细调整后的适应能力7. 每年加以改进的汽车8. 船用尼龙绳索的残留物9. 有毒化学物b. sentence1. 我们一直在滥用这股强大的力量，就像传说中的魔术师的徒弟一样，并没有意识到我们的这种行为很可能会导致灾难性的后果。2. 即使全球变暖这种灾害永不发生，即使臭氧层空洞仍然只是一种深奥的极低现象，人类活动已极大地改变了全球条件，这些也许是用照相机拍摄不出来的。3. 与生态圈相反，技术圈是由线性流程决定的。4. 现在技术圈运作的能源主要是矿物燃料，一旦用完，永不再生。5. 尼龙不能进行生物分解也就是说，在现存的有机生物中还没发现哪种酶可以分解尼龙。6. 有生命的东西创造了一系列对生命至关重要的有限但独立的物质和反应。7. 免费