As bananas ripen， the green skin turns ye11ow gradually. Chemical changes occur in the f1esh of the fruit as well：starch（淀粉）changes to sugar；pectin（果胶）breaks down，losing its stiffness； and the f1esh softens.
Is ripening fruit a self－contained system， or is the rate of these changes affected by the environment？ We designed the experiment below to see if different atmospheres， produced by different packaging， affected the rate of ripening. You will vary the atmosphere surrounding unripe bananas and observe the effect on the ripening process。
Now set up the bananas in their environments as follows：
1. Put two green bananas in a paper bag and fo1d the top over to seal out the air.
2．Put one green banana and the very ripe banana in the other paper bag and fold over the top.
3. Put two green bananas in a plastic bag and seal it.
4. Wrap（包）one green banana tightly in a plastic bag.
5. Leave one green banana exposed to the air.
Leave the fruit a1one or five days to ripen. Ripening fruit“breathes”． This means that it takes up oxygen and gives off C02. Oxygen is extremely important and necessary for the chemical reactions involved in ripening. In addition, ripening fruit gives off another gas, called ethylene（乙烯）. Not only is ethylene a product of ripening fruit, it also promotes the further ripening of the fruit.
Paper bags tend to keep the ethylene in, but they allow oxygen and ethylene to pass through slowly. Plastic bags do not allow the free flow of oxygen or ethylene. In this experiment, the green banana in paper bag with the ripe banana should ripen most quickly. The green bananas in the paper bag should ripen faster than the bananas in the plastic bag. The banana left exposed to air has an unlimited supply of oxygen, so it will turn brown most quickly. You will notice that the side of this banana that rests on the counter will ripen more quickly than the other sides, because it has the
closest contact（接触）with its own ethylene. The banana that is tightly wrapped in plastic has no oxygen supply and should ripen most slowly. Now can you see why bananas are sealed in plastic in many supermarkets？
72. What makes the green banana in Bag 2 ripen more quickly than the ones in Bag 1？
A. Ethylene from the very ripe banana.            B. The free flow of oxygen or ethylene
C. C02 from the very ripe banana.                     D. The limitation of oxygen supply.
73. How can we slow down the ripening of bananas exposed to the air？
A. To rest them on the counter.                                   B. To keep them in the basket.
C. To put them on the ground.                                     D. To hang them up from the ceiling
74. It can be concluded from the passage that          .
A. the ripening banana is a self-contained system
B. the rate of ripening bananas is affected by the environment
C. wrapped bananas experience no chemical changes to ripen
D. ripening bananas give off oxygen, C0, and ethylene
75. Why are bananas sealed in plastic in many supermarkets？
A. To make them ripen more quickly.                B. To make them ripen more slowly.
C. To make banana flesh soften.                        D. To turn green bananas yellow.

C
Andreea,18,from Romania, sent a photograph of the view from her window and included a brief apology, “Sorry, this picture is plain and boring. No one would like it.”
At home in New Jersey, US, Coreen Burke,16, clicked on the same image on the internet. She saw a village with its rooftops and walls painted in reds and yellows, a distant chimney(烟囱) giving off smoke. “Isn’t this amazingly different from my country?” She thought to herself.
Burke, a teenager with a skill for computers, saw beauty in that photo. She posted it to her blog, Outside My Window, which features a daily snapshot(快照) of someone’s window view around the world.
The concept is simple: We can all relate to the act of staring through a piece of glass, onto the scene on the other side. “Maybe if we understood the way people from all over the world live,” she explained, “we would all get along better than we have been lately.”
With a click of a mouse, you can see Frederic’s window in the south of France, looking out on sailboats anchored (抛锚) in a peaceful harbor. Or Virginia’s view in Canada, a winter scene with trees laced in white.
Like most high school students, Burke has traveled the world. But she says someday she hopes to collect stamps in her passport, starting with Greece and India. Her recent break was devoted to launching the site with a blogger account and recruiting(招募) contributors from deviant ART, an online art community. She posted the first window view from Switzerland, a sunset photographed by an 18-year-old. Then others came flowing in by email, up to seven a day, from as far as Kazakhstan and Indonesia.
Contributors are marked on maps pinned on her bedroom wall: a blue dot indicates their country and a pink dot shows their city, if they provide it. The most responses have come from Europe – Estonia, Poland, Italy, Germany and Sweden, to name a few. She is crossing her fingers, thinking that she’ll receive a photo from Africa or Antarctica, which are unrepresented so far.
While she’s become a cyber crusader(网络革新者) for appreciating the beauty outside our own windows, get this: She has no windows in her bedroom. She has a nice skylight（天窗）, though.
51. What does Burke think of the picture she received from Andreea?
A. Boring      B. Charming    C. Strange    D. Plain
52. Outside My Window is a blog intended to show_______.
A. the view from Burke’s window
B. pictures of rural New Jersey
C. photos of window views taken by people all over the world
D. beautiful scenes of famous places of interest
53. We can conclude from the article that Burke _______.
A. believes we should reach out to people of different cultures
B. has traveled around the world and taken many pictures
C. is a member of an online art community
D. has made a lot of money by selling beautiful pictures
54. Which of the following is not true?
A. Burke is likely to receive a photo from Africa or Antarctica.
B. Burke is a junior middle school student.
C. Burke has photos from many countries in the world, including Kazakhstan.
D. Burke wants a photo of window view from Africa or Antarctica.
55．What is the best title of this passage?
A. World Windows
B. Beautiful Pictures
C. Pictures on the Internet
D. Windows in Bedrooms

A school in Nanjing plans to order Korean-style school uniforms (校服) for students, but parents were against the move, believing that the new uniforms looked too good and would encourage early romances among the students.
Parents: “My daughter was so excited about the Korean-style uniform, saying it’s her dream to wear a miniskirt to school every day,” a mom said. “My daughter also called her classmates to talk about how handsome the boys looked in the uniforms! If the students wear such beautiful uniforms, how can they concentrate on their studies?”
School: We had to stop the plan because many parents were strongly against it. Some parents thought it was just a way for the school to make money, and others thought the new uniforms would take students’ attention away from their studies.
Students: The students were very disappointed about the school’s final decision. They thought the sportswear uniforms made them look dull. They said the Korean uniforms had many advantages such as raising interest in class and lifting confidence.
As for concerns about romance, the students believe that love is love and has no relationship to the uniforms.
The Department of Education: The schools can choose their own styles. Either sportswear or other uniforms are OK. Currently, most middle and elementary schools in Nanjing have sportswear uniforms.
Expert: Fashionable school uniforms can increase students’ interest in learning.
Parents don’t need to worry too much about early romances. Today’s primary and middle school students have strong personalities and their appreciation of beauty is rapidly forming. A fashionable uniform can develop their sense of belonging to the school and reduce their resistance(反抗) to the school’s management.
But we don’t have to follow Korean or Japanese styles. We should design our own Chinese style uniforms.
1．Students think the new uniforms will________.
    A. make them have good taste in fashion        B. make them feel confident
    C. make them feel proud of their school        D. reduce their fear of teachers
3．The opinion of the expert is to________.
   A. forbid the students to wear fashionable uniforms
B. encourage the students to wear sportswear uniforms
C. design uniforms in a Chinese style
D. wear new uniforms in a foreign style
3．We can infer from the passage that_________.
A. school uniforms are mostly blue or black
B. few students are willing to wear school uniforms
    C. school uniforms are a waste of money
D. schools are encouraged to choose their own uniforms

Part B: Vocabulary 9%

F. negative       G. failures         H. defined          I. mark          J. reliable  

We might be surprised at the progress made in every field of study, but the methods of testing a person’s knowledge and ability remain as primitive as ever they were. It is really extraordinary that after all years, educationists have still failed to devise something more 41 than examinations. For all the 42 that examinations test what you know, it is common knowledge that they more often do the exact 43. They may be a good means of testing memory, or the knack of working rapidly under extreme pressure, but they can tell you nothing about a person’s true ability.

As anxiety-makers, examinations are 44 to none. That is because so much depends on them. They are the 45 of success or failure in our society. Your whole future may be decided in one fateful day. It doesn’t matter that you weren’t feeling very well, or that your mother died. Little things like that don’t 46: the exam goes on. No one can bring out the 47 in him when he is in terror, or after a sleepless night, yet this is precisely what the examination system expects him to do. The moment a child begins school, he enters a world of fierce competition where success and failure are clearly 48 and measured. Can we wonder at the increasing number of “dropouts”: young people who are written off as 49 before they have started a career? Can we be surprised at the suicide rate among students?

    As bananas ripen， the green skin turns ye11ow gradually. Chemical changes occur in the f1esh of the fruit as well：starch（淀粉）changes to sugar；pectin（果胶）breaks down，losing its stiffness； and the f1esh softens.

Is ripening fruit a self－contained system， or is the rate of these changes affected by the environment？ We designed the experiment below to see if different atmospheres， produced by different packaging， affected the rate of ripening. You will vary the atmosphere surrounding unripe bananas and observe the effect on the ripening process。

Now set up the bananas in their environments as follows：

1. Put two green bananas in a paper bag and fo1d the top over to seal out the air.

2．Put one green banana and the very ripe banana in the other paper bag and fold over the top.

3. Put two green bananas in a plastic bag and seal it.

4. Wrap（包）one green banana tightly in a plastic bag.

5. Leave one green banana exposed to the air.

Leave the fruit a1one or five days to ripen. Ripening fruit“breathes”． This means that it takes up oxygen and gives off C02. Oxygen is extremely important and necessary for the chemical reactions involved in ripening. In addition, ripening fruit gives off another gas, called ethylene（乙烯）. Not only is ethylene a product of ripening fruit, it also promotes the further ripening of the fruit.

Paper bags tend to keep the ethylene in, but they allow oxygen and ethylene to pass through slowly. Plastic bags do not allow the free flow of oxygen or ethylene. In this experiment, the green banana in paper bag with the ripe banana should ripen most quickly. The green bananas in the paper bag should ripen faster than the bananas in the plastic bag. The banana left exposed to air has an unlimited supply of oxygen, so it will turn brown most quickly. You will notice that the side of this banana that rests on the counter will ripen more quickly than the other sides, because it has the

closest contact（接触）with its own ethylene. The banana that is tightly wrapped in plastic has no oxygen supply and should ripen most slowly. Now can you see why bananas are sealed in plastic in many supermarkets？

72. What makes the green banana in Bag 2 ripen more quickly than the ones in Bag 1？

A. Ethylene from the very ripe banana.            B. The free flow of oxygen or ethylene

C. C02 from the very ripe banana.                     D. The limitation of oxygen supply.

73. How can we slow down the ripening of bananas exposed to the air？

A. To rest them on the counter.                                   B. To keep them in the basket.

C. To put them on the ground.                                     D. To hang them up from the ceiling

74. It can be concluded from the passage that          .

A. the ripening banana is a self-contained system

B. the rate of ripening bananas is affected by the environment

C. wrapped bananas experience no chemical changes to ripen

D. ripening bananas give off oxygen, C0, and ethylene

75. Why are bananas sealed in plastic in many supermarkets？

A. To make them ripen more quickly.                B. To make them ripen more slowly.

C. To make banana flesh soften.                        D. To turn green bananas yellow.