2017年職稱英語考試綜合類概括大意練習九

　　【摘要】環(huán)球網(wǎng)校：2017年職稱英語考試正在報名中，目前備考2017年職稱英語考試的考生也在循序漸進的模擬中。對此，環(huán)球小編整理了《2017年職稱英語考試綜合類概括大意練習九》，希望備考2017年職稱英語考試的考生都能順利通關(guān)。

　　相關(guān)推薦：2017年職稱英語考試技巧匯總

　　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.

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　　環(huán)球網(wǎng)校友情提示：2017年職稱英語考試即將開始報名，本文整理“2017年職稱英語考試綜合類概括大意練習九”,供考生參考練習。如果您在此過程中遇到任何疑問，請登錄環(huán)球網(wǎng)校職稱英語頻道及職稱英語論壇，我們隨時與廣大考生朋友們一起交流!

　　【摘要】環(huán)球網(wǎng)校：2017年職稱英語考試正在報名中，目前備考2017年職稱英語考試的考生也在循序漸進的模擬中。對此，環(huán)球小編整理了《2017年職稱英語考試綜合類概括大意練習九》，希望備考2017年職稱英語考試的考生都能順利通關(guān)。

　　相關(guān)推薦：2017年職稱英語考試技巧匯總

　　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

　　參考答案：DCAED　BEF

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　　環(huán)球網(wǎng)校友情提示：2017年職稱英語考試即將開始報名，本文整理“2017年職稱英語考試綜合類概括大意練習九”,供考生參考練習。如果您在此過程中遇到任何疑問，請登錄環(huán)球網(wǎng)校職稱英語頻道及職稱英語論壇，我們隨時與廣大考生朋友們一起交流!