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 binations of DNA which e from the random(随机的,任意的) mixing of your parents’ genes. Except for identical twins (同卵双胞胎), no one has the same bination 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.

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.

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 pare differences between twins.

D. To study brother-and-sister relationships.

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

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.

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.

British potato farmers were angry and wanted the expression “couch potato” to be taken out of the dictionary because it harmed the vegetable’s image.

The British Potato Council wants the Oxford English Dictionary to replace the expression with the term “couch slouch”, with protests being outside Parliament in London and the offices of Oxford University Press.

Kathryn Race, head of marketing at the Council, which represents some 4,000 planters and processors, said the group had complained in writing to the OED but had yet to receive a response.

“We are trying to get rid of the image that potatoes are bad for you,” she said on Monday.

“The potato has had its knocks in the past. Of course it is not the Oxford English Dictionary’s fault but we want to use another term instead of “couch potato” because potatoes are naturally healthy.”

The OED says that “couch potato” began as American slang, meaning “a person who spends his or her leisure time sitting around, especially watching television or video tapes.”

The Potato Council says its campaign is backed by dieticians (饮食学家) who say the vegetable is low in fat and high in vitamin C.

Supporting the campaign, famous cook Antony Worrall Thompson said the vegetable was one of Britain’s favorite foods.

“Not only are they healthy, they are also convenient and yummy (美味). Life without potato is like a sandwich without a filling,” he said.

John Simpson, chief editor of the Oxford English Dictionary, said the dictionary first included the term “couch potato” in 1993 and said “dictionaries just reflect the words that society uses.”

Simpson said words were never taken out of the full-length dictionary, which includes some 650,000 words in 20 volumes.

But little-used words can be removed from the smaller dictionaries to make way for newer ones.

“If society stops using words then they get taken out of the smaller dictionaries,” he added.

The first known recorded use of the expression “couch potato” was in an article in Los Angeles Times, in 1979, Simpson said.

Nigel Evans, a member of Parliament for the Ribble Valley in Lancashire, has made a motion in support of the campaign, highlighting the nutritional value of the British potato.

1.British potato farmers wanted to _________.

A.advertise their produces

B.call for a higher price for their potatoes

C.remove the expression “couch potato” from the dictionary

D.let people know how important the potato is in people’s lives

2.The farmers think that _________.

A.potatoes have had a bad image

B.Potatoes are good for people by nature

C.potatoes sometimes do harm to people

D.it’s the dictionary’s fault to use the expression “couch potato”

3.John Simpson thinks that _________.

A.the expression can be taken out of every kind of dictionary

B.dictionaries do not necessarily reflect the words the society uses

C.little-used words can remain in the smaller dictionaries

D.it is impossible for them to take the expression out of the dictionary

4.What is wrong with the expression “couch potato” according to the farmers in this passage?

A.It is connected with unfavorable meaning.

B.Potato should be used in the expression.

C.It is borrowed from America English.

D.It refers to a kind of person.

B

IKEA is the world’s largest furniture retailer, and the man behind it is Ingvar Kamprad, one of the world’s most successful businessmen. Born in Sweden in 1926, Kamprad was a natural businessman. As a child, he enjoyed selling things and made small profits from selling matches, seeds, and pencils in his community. When Kamprad was 17, his father gave him some money as a reward for his good grades. He used it to start up a business—IKEA. IKEA's name comes from Kamprad's initials (I.K.) and the place where he grew up ('E' and 'A').

IKEA first began to sell furniture through a mail-order book in 1947. The furniture was all designed and made by manufacturers near Kamprad’s home. Initial sales were very encouraging, so Kamprad expanded the product line.Furniture was such a successful aspect of the business that IKEA became a pure furniture company in 1951.

In 1956 Kamprad saw a man disassembling a table to make it easier to transport. Kamprad was inspired. The man had given him a great idea: flat packaging. Flat packaging would mean lower shipping costs for IKEA and lower prices for customers. IKEA tried it and sales boosted. The problem was that people had to assemble furniture themselves, but over time, even this grew into an advantage for IKEA. Nowadays, IKEA is often seen as having meanings of self-sufficiency. This image has done wonders for the company, leading to better sales and continued expansion.

Today there are over 200 stores in 32 countries. Amazingly, Ingvar Kamprad has managed to keep IKEA a privately-held company. In 2004 he was named the world’s richest man. He currently lives in Switzerland and is retired from the day-to-day operations of IKEA. IKEA itself, though, just keeps on growing.

1.The author states in Paragraph 4 that flat packaging___________.

A. needs large space to store furniture

B. is a business concept inspired by Kamprad

C. helps reduce transportation costs

D. makes the company self-sufficient

2.What is the main idea of the passage?

A. Ingvar Kamprad established IKEA and succeeded.

B. IKEA is the world’s largest furniture retailer.

C. The advantages of IKEA’s furniture.

D. Ingvar Kamprad was a natural businessman.

3.What can you learn about IKEA form the passage?

A. The starter kept IKEA a company operated by a few people

B. The furniture was made by manufacturers in Kamprad’s home

C. The starter made a big fortune when he was a child

D. The goods sold in IKEA are limited and not welcomed

4.The passage is written mainly in terms of ___________.

A. examples that illustrate a problem

B. order of events

C. analysis of a process

D. comparison and contrast

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