英语口语900句mp3免费下载及文本

英语口语900句mp3免费下载及文本内容摘要：

p to remain in existence, a profitmaking anization must, in the long run, produce something consumers consider useful or desirable. 利组织若要生存，最终都必须生产出消费者可用或需要的产品。 6. The greater the population there is in a locality, the greater the need there is for water, transportation, and disposal of refuse. ，其对水，交通和垃圾处理的需求就会越大。 7. It is more difficult to write simply, directly, and effectively than to employ flowery but vague expressions that only obscure one’ s meaning. ，直接，有力的写作难于花哨，含混而意义模糊的表达。 8. With modern offices being more mechanized, designers are attempting to personalize them with warmer, less severe interiors. 代办公室的日益自动化，设计师们正试图利用较为温暖而不太严肃的内部装饰来使其具有亲切感。 9. The difference between libel and slander is that libel is printed while slander is spoken. ，而后者是口头的。 10. The knee is the joints where the thigh bone meets the large bone of the lower leg.。 11. Acids are chemical pounds that, in water solution, have a sharp taste, a corrosive action on metals, and the ability to turn certain blue vegetable dyes red. ，它在溶于水时具有强烈的气味和对金属的腐蚀性，并且能够使某些蓝色植物染料变红。 12. Billie Holiday’ s reputation as a great jazzblues singer rests on her ability to give emotional depth to her songs. 12. Billie Holiday’ s作为一个爵士布鲁斯乐杰出歌手的名声建立在能够赋予歌曲感情深度的能力。 13. Essentially, a theory is an abstract, symbolic representation of what is conceived to be reality.。 14. Long before children are able to speak or understand a language, they municate through facial expressions and by making noises. ，很久就会通过面部表情和靠发出噪声来与人交流了。 15. Thanks to modern irrigation, crops now grow abundantly in areas where once nothing but cacti and sagebrush could live. (技术设施 )之赐，农作物在原来只有仙人掌和荞属科植物才能生存的地方旺盛的生长。 16. The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them. ，以便校准机械计时器。 17. Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others. ，因为人类学家采用一整套强有力的方法和技术来记录观测结果，而这样记录下来的观测结果是供他人核查的。 18. Fungi are important in the process of decay, which returns ingredients to the soil, enhances soil fertility, and deposes animal debris. ，而腐化过程将化学物质回馈于土壤，提高其肥力，并分解动物粪便。 19. When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time. ，产生几乎纯质的音调， 其音量经久不衰。 20. Although pecans are most plentiful in the southeastern part of the United States, they are found as far north as Ohio and Illinois. 也能看见它们。 21. Eliminating problems by transferring the blame to others is o ften called scapegoating.。 22. The chief foods eaten in any country depend largely on what grows best in its climate and soil. ，大体取决于什么作物在其天气和土壤条件下生长得最好。 23. Over a very large number of trials, the probability of an event’ s occurring is equal to the probability that it will not occur. ，某一事件发生的几率等于它不发生的几率。 24. Most substance contract when they freeze so that the density of a substance’ s solid is higher than the density of its liquid. ，所以 他们的密度在固态时高于液态。 25. The mechanism by which brain cells store memories is not clearly understood.。 26. By the middle of the twentieth century, painters and sculptors in the United States had begun to exert a great worldwide influence over art. ，美国画家和雕塑家开始在世界范围内对艺术产生重大影响。 27. In the eastern part of New Jersey lies the city of Elizabeth, a major shipping and manufacturing center. ，一个重要的航运和制造业中心，坐落于新泽西州的东部。 28. Elizabeth Blackwell, the。