常州酌乒文化传播有限公司

當前位置:

2014年職稱英語考試試題衛(wèi)生類b級概括大意強化練習題2

發(fā)表時間:2014/3/7 9:23:50 來源:互聯網 點擊關注微信:關注中大網校微信
關注公眾號

【導讀】本文是由中大職稱英語考試網編輯整理的職稱英語衛(wèi)生類相關復習題,更多免費精選職稱英語考試練習題盡在中大職稱英語考試網,敬請關注!

Keeping Cut Flowers

1 While everybody enjoys fresh cut flowers around his 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 12oC than when kept at 260c. 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 produces 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 (含氯漂白劑) 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.

23 Paragraph 2__________________

24 Paragraph 3__________________

25 Paragraph 4__________________

26 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

27 A few simple facts will help you keep cut flowers_______________

28 Respiration plays a key role________________

29 The aging of cut flowers can be slowed down_________________

30 Another important way to prolong the life of cut flowers is ____________________

A by keeping its original shape and colour

B in the life of the cut flower

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:DCAE DBEF

編輯推薦:

2014年職稱英語考試試題衛(wèi)生類b級概括大意強化練習題匯總

2014年職稱英語考試試題衛(wèi)生類a級概括大意強化練習題匯總

2014年職稱英語考試試題衛(wèi)生類c級閱讀理解強化練習題匯總

關注網絡輔導 職稱英語報名時間匯總 招生方案 職稱英語教材預訂 

(責任編輯:vstara)

2頁,當前第1頁  第一頁  前一頁  下一頁
最近更新 考試動態(tài) 更多>
东明县| 民和| 桓台县| 西城区| 南平市| 大安市| 临西县| 宜君县| 廉江市| 嘉兴市| 个旧市| 新邵县| 新巴尔虎左旗| 绥芬河市| 德惠市| 博兴县| 尖扎县| 家居| 长乐市| 梁山县| 威信县| 怀柔区| 萍乡市| 武城县| 枣庄市| 永平县| 巴马| 台北市| 区。| 勐海县| 华安县| 安平县| 静宁县| 桃源县| 襄汾县| 堆龙德庆县| 定安县| 永平县| 铜川市| 中卫市| 前郭尔|