根据短文内容, 从下框A~F选项中选出能概括每段主题的最佳选项，并在答题卡上将该选项涂黑。选项中有一项为多余项。

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 flower for a week or more without preservatives ( which contain biocides (杀虫剂) that kill bacterial 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 retain their freshness eight times longer when kept at 12℃ than when kept at 26℃. Keeping freshly harvested flowered at the right temperatures is probably the most important aspect of flower care.

3._____________

  The process by which flowers consume oxygen and produce carbon dioxide, called respiration (呼吸), supplies 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 speed at which flowers die? By controlling respiration. How is respiration controlled? By controlling temperature, we know that respiration produces heat, but the reverse ( 反面 ) is also true. Thus by keeping 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, chlorine bleach ( 含氯漂白剂 ) can be used in small quantities. It is recommended that 15 drops of chlorine bleach be added to each liter of water. The water and solution （ 溶液 ）should also be replaced each day.

Most of us seem to reach our peak of alertness (警觉) around noon. Soon after that, alertness declines, and sleepiness may set in by mid-afternoon.
Your short-term memory is best during the morning—in fact, about 15 percent more efficient than at any other time of day. So, students, take notice: when you are faced with a morning exam, it really does pay to review your notes right before the test is given.
However, long-term memory is different. Afternoon is the best time for learning materials that you want to recall days, weeks or months later. Politicians, business executives or others who must learn speeches would be smart to do their memorizing during that time of day. You should try to do most of your studying in the afternoon, rather than late at night. Many students believe they memorize better while burning the midnight oil because their short-term recall is better during the early hours of the morning than in the afternoon. But short-term memory won’t help them much several days later, when they face the exam.
By contrast, we tend to do best on tasks related to the process of knowing, understanding, and learning numbers during the morning hours.
What about sports? During afternoon and early evening, you’re able to react the quickest to an outside stimulus—like a baseball speeding toward you. Studies have also shown that late in the day, when your body temperature is peaking, you will consider PE easier and less tiring—whether it actually is or not. That means you are more likely to work harder during a late afternoon or early evening workout, and therefore benefit more from it.  
In fact, all of your senses—taste, sight, hearing, touch and smell—may be at their keenest during late afternoon and early evening. That could be why dinner usually tastes better to us than breakfast.
While all of us follow the same general pattern of ups and downs, the exact timing varies from person to person. It all depends on how your “biological” day is structured. Each of us can increase our knowledge about our individual rhythms. Learn how to listen to the inner beats of your body; let them set the pace of your day. You will live a healthier and happier life.
【小题1】What does the underlined “it really does pay” mean?

The Jordans had the best raspberries in the neighborhood, and that their bushes were always heavy with fruit.So, that summer Friday night, we snuck(潜行) into the Jordans’ backyard and  21  ourselves carefully around the bushes and started  22  their sweet, juicy berry. And we were enjoying every bite of ill-gotten berry  23  all of a sudden the Jordans’ backyard lights were turned on.

“What you boys doing out here?” Mr Jordan shouted. In all  24  ran off my friends, une aten raspberries  25  everywhere.

He made an attempt to grab one or two, but they were too quick. Speed was never my   26  . So I could just stand there and  27  whatever punishment from the Jordans and my parents. I took the scolding that Mr Jordan gave me until we reached my house, where my mother  28  . My friends said they could hear every  29  word from the darkness of our backyard, where they had gathered to celebrate their  30  .

They  31   me about it for days afterwards, while all I could do was complain about how   32   it was that I had to pay the full  33   for doing the exact same thing all of them had done without any  34   consequences. After about a week, I complained it to my father.

“You took raspberries without asking, and you got exactly the punishment you  35 ,”Dad said.

“But what about the other guys?” I asked.

“That’s not my  36  , nor should it be yours,” Dad said. “You can’t control what happens to other people. You can  37   deal with what happens to you.”

Back then I thought Dad just didn’t   38   it. But through the years I come to realize that,   39 , he knew what he was talking about. We didn’t come to earth with a(an)  40  that life would treat us fairly. The only thing we can actually deal with is what happens to us.

1..

A. allowed      B. protected            C. positioned      D. helped

2..

 A. harvesting      B. digging          C. throwing         D. hunting

3..

 A. and            B. when             C. before          D. as

4..

 A. senses          B. ways             C. directions           D. efforts

5..

 A. growing         B. running          C. flying               D. hiding

6..

 A. power           B. disadvantage     C. strength             D. attempt

7..

 A. accepted       B. rejected          C. risked              D. enjoyed

8..

 A. paid for       B. took over        C. turned away      D. picked out

9..

 A. encouraging    B. swear                C. cool            D. kind

10..

 A. stealing       B. experience           C. escape           D. behavior

11..

 A. explained       B. teased               C. scolded         D. praised

12..

 A. unfair          B. funny                C. strange          D. equal

13..

 A. number          B. accident             C. price            D. task

14..

 A. same            B. reliable             C. noticeable       D. safe

15..

A. deserted         B. received             C. refused          D. deserved

16..

  A. concern        B. purpose          C. request         D. answer

17..

 A. sometimes     B. only             C. mostly           D. almost

18..

  A. care           B. value             C. get             D. handle

19..

  A. as well        B. above all        C. as usual        D. or else

20..

A. promise       B. guarantee        C. situation       D. opinion

 _________kinds of animals in the world died out___________proved true.

     A. All ; has       B. When some ; have    C. While all ; have    D. That some ; has

Friendship can deeply affect the physical and mental health of both men and women. Studies show that people who have no friends or who are lonely, are more likely to die earlier, get sick more often and suffer greater physical wear and tear(折磨）than those who have a support system of friends.

Sometimes, family members may be more likely to give you advice or tell you what you don't want to hear. It may not be as good as a friend who will listen to you and guide you, but support your decisions anyway. The most important elements about friendship are those who suffer support and do not judge your decisions based on society.

One reason for the link between social support and good health practice seems to be that people who feel cared for by others are less stress-out and protected against the symptoms(症状）of depression and loneliness.

Generally, women benefit most because of how they deal with stress. Women are more social in how they deal with stress than men while men are more likely to have a "fight or flight” reaction. Women also tend to have larger, denser social network, in which more people know each other and help each other, while men typically have smaller groups of friends and will rely on their wives or other important people for more support. While all these affect people psychologically (心理上）_, friendship brings comfort that reduces the ill effects of stress, and the sex difference also contributes to the differ­ence in the length of one's life time.

1.In the author's opinion, a real friend should          .

A．tell you what to do even if you refuse to hear it

B．try to persuade you to change your mind quickly

C．judge your decision according to his, her experience

D．give you advice but respect your own decision

2.Women benefit more from friendship than men because         .

A．women are always cared for by more people than men

B．women are usually less stress-out when staying with others

C．women are more likely to solve problems with friends’ help

D．women can always keep more long-life friendship than men

3.According to the passage we can infer that          .

A．it's good for women to tell men what they should do or not

B．friends are always more important than family members

C．men don't want to share their problems with many people

D．the trend that women can live longer makes them more relaxed

4.This passage mainly talks about         .

A．why people should develop friendship

B．when friendship affects people's health

C．people’s different attitudes towards friendship

D．the friendship which can make people live longer