When you watch TV programmes about wild animals, it is amazing to see how an antelope can escape a lion’s attack. In the wilderness, everyone has a stunt . Even plants have their own ways of fighting 题目和参考答案——青夏教育精英家教网—

题目内容

When you watch TV programmes about wild animals, it is amazing to see how an antelope can escape a lion’s attack. In the wilderness, everyone has a stunt (绝技). Even plants have their own ways of fighting off enemies.

Over millions of years of evolution, plants have developed a unique defense system. Chemicals are widely used for survival, By making their leaves, flowers, stems, roots and fruits distasteful or poisonous to predators (食肉动物), plants can fight back.

One such plant is the Gold Wattle tree. British botanist David Cameron has found that when an animal eats the tree’s leaves, the amount of poisonous tannin (丹宁酸) increases in the other leaves. “It’s like the damaged leaves telephoning the others telling them to fight together against the enemy,” he said.

The tree also sends defense messages to neighboring plants by giving out a special smell. Golden Wattle trees in the surrounding 45 meters will get the message and produce more tannin within 10 minutes. Now, if a predator eats too many of the trees’ leaves, it will die.

Every species of plant or tree specializes in the production of a particular set of chemicals. A herbivore (草食动物) that can safely eat the leaves of one tree may be poisoned by its neighbor.

In this way, plants have developed not only individual defense systems, but also shared it with others. This makes it impossible for a single predator to destroy even a small area of forest.

1．According to the passage, which of the following statements about the Golden Wattle tree is NOT correct?

　 A．It fights off its enemies by producing poisonous chemicals.

　 B．It has the ability to warn its neighboring plants of danger.

　 C．It is only poisonous while it is being attacked.

　 D．An animal that eats too many of its leaves may be poisoned to death.

2．It is impossible for a single predator to destroy even a small area of forest mainly because

　 _________.

　 A．plants will become poisonous if they are attacked.

　 B．plants have very good individual defense systems.

　 C．plants can protect themselves and share their defense systems.

　 D．plants can give out special smell to fight off their enemies.

3．What does David Cameron mean in paragraph 3?

　 A．He means that leaves of Golden Wattle trees can speak to each other.

　 B．He intends to emphasize that the defense system of Golden Wattle is quick and effective.

　 C．He wants to indicate that the Golden Wattle leaves are very clever.

　 D．He is explaining how the Golden Wattle trees warn each other when they are attacked.

4．According to the writer, the unique defence system of plants is the result of _______.

　 A．millions of years of evolution.

　 B．their outstanding poison producing system.

　 C．the tough natural environment.

　 D．large numbers of herbivores in the wilderness.

5．What would be the best title for the passage ?

　 A．Stunts in the wilderness.　 B．A unique plant.

　 C．Poisonous plants. D．Plants fight back.

1—5 CCBAD

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第一节   短文填空（共10小题；每小题1分，满分10分）
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are built to         (存放) them . Almost all great men are lovers 78.
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第二卷（非选择题；两节，共35分）

第四部分写作（共两节，满分35分）

第一节短文填词（共10小题；每小题1分，满分10分）

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Dear Mr. Smith,

How are you! I’m very happy to write this letter to you.

I r the admission notice to Beijing University last 76．__________

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Ourselves, we were quite nervous, b we were poor at listening 80．__________

And speaking. However, you patiently （鼓励） us to practice 81．__________

As much as possible. Your class was so （生动）that all of 82．__________

Us were interested. With your I improved my English step 83．__________

step；otherwise, in NMET I wouldn’t have got a satisfactory 84．__________

result. Mr. Smith, thank you very much indeed. I miss you! 85．__________

Hope to see you soon!

阅读下面对话，掌握其大意，并根据所给首字母的提示，在标有题号的右边横线上写出一个英语单词的完整、正确形式，使对话通顺。

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B：I generally have two weeks’ holiday a year.

A：And what do you prefer to do when you are on holiday?

B：Well, I don’t usually visit my family. We live quite(77) c_____ and I can see them any time. But I do like to visit museums, (78)e__________ if there is a special exhibition on. I don’t like to stay at home, though my parents do. (79)I________, I prefer to get away from the city and just (80)e________ the peace of the country. You know, just sit under a tree, listen to the birds in the morning, or maybe go walking over the hills.

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A：OK. Well, thank you very much for your time.

B：You are (85)w_________.

One would have to be a fool to overlook the importance of using positive thinking for you rather than allowing negative thinking to work against you. In recent years, research in psychopharmacology (精神药理学) has proved what many people have known over the centuries: a positive attitude is good for you, good for your health, good for your wealth, good for everything. Researchers found that a positive attitude produces a specific chemical reaction which makes people feel better, while negative thinking results in a decline of hormone (荷尔蒙) and shuts down the immune (免疫的) system. This leads to illness and depression. Positive thoughts will make you feel better. Even if you must begin by literally forcing yourself to be positive (faking it, so to speak), it will become contagious (会传播的) and the positive thoughts will generate nice little w*w^w..c~o*mchemicals and good feelings which will reinforce the positive thoughts.

For example, if you force yourself to smile or laugh, even when you don't feel like smiling or laughing, if you keep at it for a few minutes, you will soon feel like it. Feelings can generate thoughts, but thoughts can also generate feelings. Control your thoughts and you can control your feelings. Positive thinking is important in all aspects of our lives. There is probably no single factor more important in determining your success in achieving your career objectives than your own attitude.

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67. We can infer from the passage that .

A. positive thinking can cure you of your diseases

B. positive thinking can easily be generated by anyone

C. a decline of hormone may cause you to be depressed

D. a specific chemical reaction is the cause of negative thinking

68. According to the passage, which of the following is true?

A. Feeling and thoughts can generate each other.

B. It's easier to control thoughts than to control feelings.

C. Your success depends wholly on your attitude.

D. Keeping smiling will surely make you successful.

69. Just like a one-eyed man in the land of the blind, you should .

A. take positive attitude in the office of militant negativism

B. be king in your office

C. pay no attention to what is going on around you

D. control your feeling to what is happening to you

70. The best title to the passage is .

A. the Bad Effect of Negative Thinking B. Why Should People Think

C. Positive Thinking Benefits People D. Thinking: The Vital Way

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