备战2013年职称英语考试,小编整理了职称英语考试相关学习资料,希望对您学习职称英语有所帮助!
阅读下面这篇短文,短文后有2项测试任务:(1)第1~4题要求从所给的6个选项中为第2—5段每段选择1个正确的小标题;(2)第5~8题要求从所给的6个选项中选择4个正确选项,分别完成每个句子。
Keeping Cut Flowers
1 While everybody enjoys fresh cut flowers around their house, few people know how to keep them for as long as possible. This may be done by keeping in mind a few simple facts.
2 An important thing to remember about cut flowers is that they are sensitive to temperature. For example, studies have shown that cut carnations (康乃馨) retain their freshness eight times longer when kept at 12~C than when kept at 26~C. Keeping freshly harvested flowers at the right temperatures is probably the most important aspect of flower care.
3 Flowers are not intended by nature to live very long. Their biological purpose is simply to attract birds or insects, such as bees, for pollination (授粉). After that, they quickly dry up and die. The process by which flowers consume oxygen and produce carbon dioxide (二氧化碳), called respiration (呼吸), generates the energy the flower needs to give the flower its shape and colour. The making of seeds also depends on this energy. While all living things respire, flowers have a high level of respiration. A result of all this respiration is heat, and for flowers the level of heat relative to the mass of the flower is very high. Respiration also brings about the eventual death of the flower. Thus the greater the level of respiration, the sooner the flower dies.
4 How, then, to control the rate at which flowers die? By controlling respiration How is respiration controlled? By controlling temperature We know that respiration produce heat, but the reverse is also true. Thus by maintaining low temperatures, respiration is reduced and the cut flower will age more slowly.
5 Another vital factor in keeping cut flowers is the quality of the water in which they are placed. Flowers find it difficult to "drink" water that is dirty or otherwise polluted. Even when water looks and smells clean, it almost certainly contains harmful substances that can endanger the flowers To rid the water of these unwanted substances, household chlorine bleach (含氯漂白剂) can be used in small quantities. It is recommended that 15 drops of chlorine bleach (at 4% solution) be added to each litre of water. The water and solution should also be replaced each day.
1 Paragraph 2
2 Paragraph 3
3 Paragraph 4
4 Paragraph 5
A Control of Respiration
B Beauty of Fresh Cut Flowers
C Role of Respiration
D Most Important Aspect of Flower Care
E Need for Clean Water
F Ways of Stopping Respiration
5 A few simple facts will help you keep cut flowers
6 Respiration plays a key role
7 The aging of cut flowers can be slowed down
8 Another important way to prolong the life of cut flowers is
A by keeping its original shape and colour
B in the life of cut flowers
C to produce carbon dioxide
D for as long as possible
E by controlling temperature
F to replace the water and solution every day
答案:1.D 2.C 3.A 4.E 5.D 6.B 7.E 8.F
2013年职称英语考试网上辅导课程高清视频逼真课堂模式,手机移动课堂,让学员学习起来更真实,更清晰,更方便!欢迎体验>>
【辅导招生】
24小时开通报名咨询热线:010-82333888
1、凡本网注明“来源:医学教育网”的所有作品,版权均属医学教育网所有,未经本网授权不得转载、链接、转贴或以其他方式使用;已经本网授权的,应在授权范围内使用,且必须注明“来源:医学教育网”。违反上述声明者,本网将追究其法律责任。
2、本网部分资料为网上搜集转载,均尽力标明作者和出处。对于本网刊载作品涉及版权等问题的,请作者与本网站联系,本网站核实确认后会尽快予以处理。
本网转载之作品,并不意味着认同该作品的观点或真实性。如其他媒体、网站或个人转载使用,请与著作权人联系,并自负法律责任。
3、本网站欢迎积极投稿
4、联系方式:
编辑信箱:mededit@cdeledu.com
电话:010-82311666