2022下半年英语六级阅读理解练习

【#四六级考试# 导语】成功的花儿，其间浸透了奋斗的泪水和汗水。然而，用泪水和汗水就可以实现一切的美好。以下是®文档大全网为大家整理的内容，欢迎阅读参考。

1.2022下半年英语六级阅读理解练习

　　"I have great confidence that by the end of the decade we'll know in vast detail how cancer cells arise," says microbiologist Robert Weinberg, an expert on cancer. "But." he cautions, "some people have the idea that once one understands the causes, the cure will rapidly follow. Consider Pasteur. He discovered the causes of many kinds of infections, but it was fifty or sixty years before cures were available."

　　This year, 50 percent of the 910,000 people who suffer from cancer will survive ai least five years. In the year 2000. the National Cancer Institute estimates, that figure will be 75 percent. For some skin cancers, the five-year survival rate is as high as 90 percent. But other survival statistics are still discouraging-13 percent for lung cancer. and 2 percent for cancer of the pancreas(胰腺)。

　　With as many as 120 varieties in existence, discovering how cancer works is not easy. The researchers madegreat progress in the early 1970s. when they discovered that oncogenes. which are cancer-causing genes (基因), are inactive in normal cells. Anything from cosmic rays to radiation to diet may activate a dormant oncogene. but how remains unknown. If several oncogenes are driven into action the cell. unable to turn them off. becomes cancerous.

　　The exact mechanisms involved are still mysterious, but the likelihood that many cancers are initiated ai the level of genes suggests that we will never prevent all cancers. "Changes are a normal pan of the evolutionary process." says oncologist William Hayward. Environmental factors can never be totally eliminated; as Hayward points out, "We can't prepare a medicine against cosmic rays. "

　　The prospects for cure.though still distant, are brighter.

　　"First we need io understand how the normal cell controls itself. Second,we have to determine whether there are a limited number of genes in cells which are always responsible for al least pan of the trouble. If we can understand how cancer works. we can counteract its action."

　　1.Robert Weinberg warns that the discovery of the causes or cancer cells won't necessarily lead to_______________________.

　　2.It is not easy to rind out how cancer works because__________________.

　　3.Once oncogenes in cells are at work.the cell will become_______________________.

　　4.By saying "We can't prepare a medicine against cosmic rays", William Hayward implies that it is impossible to avoid che impact of_______________________.

　　5.Provided that the mechanisms of cancer are found out we are able to_______________________.

2.2022下半年英语六级阅读理解练习

　　Children are getting so fat-they may be the first generation to die before their parents. an expert claimed yesterday. Today's youngsters are already falling prey to potential killers such as diabetes because of their weight. Fatty fast-food diets combined with sedentary lifestyles dominated by televisions and computers could mean kids will die tragically young, says Professor Andrew Prentice. from the London School of Hygiene & Tropical Medicine.

　　At the same time. the shape of the human body is going through a huge evolutionary shift because adults are getting so fat. Here in Britain. latest research shows that the average waist size for a man is 36-38 inches and may be 42-44, inches by 2032.This compares with only 32.6 inches in 1972. Women's waists have grown from an average of 22 inches in l920 to 24 inches in the Fifties and 30 inches now. One of the major reasons why children now are at greater risk is that we are getting fatter younger. In the UK alone. more than one million under-1.6s are classed as overweight or obese-double the number in the mid-Eighties. One inten four-year-olds are also medically classified as obese.The obesity pandemic-an extensive epidemic-whichstarted m the US, has now spread to Europe. Australia, Central America and the Middle East.

　　Many nations now record more than 20 per cent of- their population as clinically obese and well over half the population as overweight. Prof. Prentice said the change in our shape has been caused by a glut of easily available high-energy foods combined with a dramatic drop in the energy we use as a result of technology developments.

　　He is not alone in his concern. Only last week one medical journal revealed how obesity was fuelling a rise in cancer cases. Obesity also increases the risk factor for strokes and heart disease. An averagely obese person's lifespan is shortened by around nine years while a severely obese person by many more.

　　Prof. Prentice said: "So will parents outlive their children. as claimed recently by an American obesity specialist?" The answer is yes-and no. Yes,when the offspring become grossly obese. This is now becoming an alarmingly common occurrence in the US. Such children and adolescents have a greatly reduced quality of life in terms of both their physical and psychosocial health. So say No to that doughnut and burger.

　　1.Professor Andrew Prentice says kids will die young because of their__________________.

　　2.In Britain, overweight or obese under-16s in the mid-Eighties were___________________today.

　　3.What should be responsible for the change in our body shape according to the passage?

　　4.The risk of some diseases such as cancer. strokes and heart disease may become greater due to_____________.

　　5.What does the author suggest we do by saying "say No to that doughnut and burger" ?

3.2022下半年英语六级阅读理解练习

　　Gift certificates, or rather their high-tech new replacements. gift cards (certificates in the form of credit cards). are America's most popular present. They spare gift-givers the strain of choosing anything specific. and recipients the horror of having to keep the result. Retailers like them too, because they are quite profitable. But like most goods in the recession, they have become harder to shift, prompting some radical redesigns.

　　Gift cards are profitable because retailers receive money for them up from, and around 10% of them are never redeemed (收回), according to Lew Paine of the GFK Group, a market-research firm. When people do use them. they often spend more than the amount given. on products with highmargins.

　　But sales of gift cuds were down by around 6% last year in America, to about $25 billion, partly because discounts in stores were so steep that customers naw more value in buying merchandise directly. Bankruptcies among retailers also scared people away from gift cards, for tear that scores would not be around to honour them. Some financial-services companies that offer gift cards which can be used in various stores, including Visa and American Express, came under fire for charging monthly maintenance fees on unspent balances.

　　Analysts expect another tough holiday season for gift cards this year. Sales will be down by about 5%, projects Archstone Consulting, which studies the business. Retailers arc trying to counter this decline by making gift cards more attractive. One approach is fo add nifty(俏皮的) packaging. Target, for example，is selling gift cards that double as wind-up toys or play recorded greetings. Other retailers have launched schemes that let people e-mail one another electronic gift certificates, which the recipients can then print out for use.

　　Some retailers have even given gift cards away in an effort to drum up business. Neiman Marcus. for example, sent $50 gift cards to prolific customers to entice them back for further sprees. Target will give a $l0 gift card to people who spend $l00 before noon on the Friday after Thanksgiving, which is considered thestart of the holiday shopping season. Such handouts can be cheaper than sha~p store-wide discounts. which proved devastating to profits last year. Expiry dates add a sense of urgency, which retailers are eager tofoster.

　　But many customers also have a crafty streak. Bargain-hunters are flocking to eBay and other websites to buy discounted, second-hand gift cards for their own use. eBay is thought to sell around 100,000 gift cardsevery month. PlasticJungle.com and other sites where people sell unwanted gift cards at discounts, as highas 40% are one pan of the gift-card business which has boomed of late.

　　1. One of the reasons for the popularity of gift cuds lies in that gift-givers don't have to worry about______________________.

　　2. What's che drawback of gift cards when the economy is in recession?

　　3. Some companies that offer gift cards were severely affected last year because_________.

　　4. How do retailers respond to the decline of sales of gift cards?

　　5. Retailers gave om handouts to promote consumption. but their efforts turned out__________.

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