In class the teacher ___ the finance project in simple but vivid language to make it easier for us to understand.
A．undertook B．clarified C．approved D．submitted
You may demand an immediate _____ if the company fails to supply the product in time.
A．refund B．justice C．guarantee D．cooperation
Social practice is _____ opportunity for students to gain _____ better understanding of how society operates.
A．the; the B．the; a C．an; a D．an; the
美国已故大演说家、”成功学家鼻祖”罗曼·文森特·皮尔有一句名言：”Attitude Is Everything”。请你结合自己的亲身经历，谈谈拥有正确的人生态度的重要性,词数120左右。
下面短文中有10处语言错误，请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏词符号(∧)，并在其下面写上该加的词。
删除：把多余的词用斜线(﹨)划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者(从第11处起)不计分。
It can be seen, more and more people own mobile phones in China now. At the end of 2002, there were 20 millions mobile phone users. By 2005 a number reached up to 30 million. People have found mobile phones convenience. They can get in touch with each other whenever or wherever they like. There’re different functions to meeting different needs, such as surf the Internet. However, it may bring us some trouble. For an example, the radiation from the phone may do harm our health. In spite of this, the number of people having mobile phones are increasing steadily.
下面文章中有5处(第61～65题)需要添加小标题。请从以下选项(A、B、C、D、E和F)中选出符合各段意思的小标题。选项中有一项是多余选项。
A. Control of Respiration
B. Basic tips for preserving cut flowers
C. Role of Respiration
D. Most Important Aspect of Flower Care
E. Need for Clean Water
F. Ways of Stopping Respiration
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. The key to keeping fresh cut flowers for a week or more without floral preservatives (which contain biocides that kill bacteria and fungus) is to keep the water fresh and the stems free of air pockets so they can continue to draw up water.
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℃ than when kept at 26℃. 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, called respiration (呼吸), generates the energy the flower needs to give the flower its shape and color. 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 (含氯漂白剂) can be used in small quantities. It is recommended that 15 drops of chlorine bleach (at 4% solution) be added to each liter of water. The water and solution should also be replaced each day.
