We each have a unique genetic make-up. Every cell of your body has the same set of about 100,000 separate genes made of DNA. These are the instructions for producing a person. Genes decide everything 题目和参考答案——青夏教育精英家教网—

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We each have a unique genetic (基因的，遗传的) make-up. Every cell of your body has the same set of about 100,000 separate genes made of DNA. These are the instructions for producing a person. Genes decide everything from the colour of your skin to the way your brain works. You have one of several billion combinations of DNA which come from the random mixing of your parents’ genes. Except for identical twins (同卵双胞胎), no one has the same combination as another person. You are unique! You are unique in another way too: in the way you are raised and all the experiences you have from before birth to adult life. These experiences influence you, your behaviour and attitudes, and the choices you make.
But are genes or life experiences more important in shaping your appearance and personality? Scientists are studying twins to find out. One set of twins occurs every 70 births---some are identical and others are non-identical twins. Identical twins are special because they share exactly the same genes and often the same environment. Non-identical twins are more like ordinary brothers and sisters.
Some identical twins have been adopted and brought up in different homes. With identical genes but a different home environment, scientists can study twins to see how much a particular feature depends on the genes we inherit. For example, we know that eye problems, like short-sightedness, are mostly genetic. But resistance to pain is largely dependent on experiences. Genes also influence our eating habits. Identical twins brought up apart often like to eat at the same time of day and feel full after eating the same amount. Non-identical twins in similar circumstances have more varied eating habits. Identical twins are also more likely to follow the same patterns for marriage and divorce than non-identical twins.
Scientists are trying to identify the different genes that influence our behaviour. Some people are thrill-seekers and get into risk-taking and adventurous activities. They take up extreme sports like bungee jumping and possibly take drugs. Scientists have discovered a gene which affects this.
We could ask, “Are our lives determined by our genes or our upbringing?” Scientists are learning more all the time, but it is certainly true that both are important in making us who we are.
【小题1】What is the main idea of the first paragraph?

A．We cannot easily change our physical appearance.

B．How we turn out depends on our parents’ genes.

C．Everyone has a physical double somewhere in the world.

D．Both our genes and our experiences make us who we are.

【小题2】Why are scientists studying twins?

A．To find out how many twins are born every year.

B．To discover what shapes us as individuals.

C．To compare differences between twins.

D．To study brother-and-sister relationships.

【小题3】According to the passage, __________.

A．one in 70 twins are genetically identical

B．non-identical twins are usually not of the same sex

C．twins separated at birth behave exactly the same

D．identical twins are genetically the same

【小题4】Which of the following is most affected by experience according the passage?

A．Eating habits.

B．Eye-sight.

C．Pain resistance.

D．Marriage patterns.

【小题5】What does the underlined “this” in Paragraph 4 refer to?

A．Our love of sport.	B．Our attitude to risk-taking.
C．Our skill at bungee jumping.	D．Our ability to take drugs.

【小题1】D
【小题2】B
【小题3】D
【小题4】C
【小题5】B

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59. What were the children asked to do in the project?

A. To meet friends at Thomas Tallis School

B. To write stories on the subject of collections.

C. To encourage visitors to write their own stories.

D. To have their friends for characters in the stories.

60. The underlined word "pesetas" in Paragraph 2 is a kind of _____.

A. story B. collection C. inspiration D. foreign coin

61. From the stories by Lauren and Charlotte, we know that _____ .

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C. both of tram will die in each other's stories

D. Latwen's cousin posted her some love letters

62. Millie Murray thinks ________.

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B. it was good for parents to have collections

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In adulthood the things that bring deep joy—love, marriage, birth—also bring responsibility and the risk of loss. For adults, happiness is complicated(复杂的).

My definition of happiness is "the capacity for enjoyment". The more we can enjoy what we have, the happier we are. It's easy to overlook the pleasure we get from the company of friends, the freedom to live where we please, and even good health.

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51. As people grow older, they ______.

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A. She cans little about ha own health

B. She enjoys the freedom of trawling

C. She is easily pleased by things in daily life.

D. She prefers getting pleasure from housework

53. What can be inferred from Paragraph 7?

A. Psychologists think satisfying work is key to happiness

B. Psychologists* opinion is well proved by Grandma's case.

C. Grandma often found time for social gatherings

D. Grandma's happiness came from modest expectations of life,
54. People who equal happiness with wealth and success

A. consider pressure something blocking their way

B. stress their right to happiness too much

C. arc at a loss to make correct choices

D. arc more likely to be happy

55. What can be concluded from the passage?

A. Happiness lies between the positive and the negative.

B. Each nun is the master of his own fate

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C. To find out if the laughter of apes and humans is related.
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A. find out ape sounds that hadn’t been realized before
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D. Humans don’t enjoy listening to ape laughter.
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D. Humans don’t enjoy listening to ape laughter.

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Section B

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A．additional

B．producing

C．regular

D．predicted E. identified

E atmosphere G. matched H. reducing I. carried J. increase

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