If you thought taking vitamins would reduce the risk of lung cancer, think again． Researchers who studied 77.721 people said on Friday that people who took too much vitamin E.especially smokers.had a 题目和参考答案——青夏教育精英家教网—

题目内容

If you thought taking vitamins would reduce the risk of lung cancer, think again．

Researchers who studied 77，721 people said on Friday that people who took too much vitamin E，especially smokers，had a small but higher risk(风险) of developing lung cancer．

They tracked the subjects’use of multi-vitamins，vitamin C and vitamin E to see if it offered protection from lung cancer．But they found that none of the vitamins was tied to a reduced risk．

“If you could find some sort of magic pill―a pill you could take once a day to decrease your risk―that would be wonderful．But unfortunately．we didn’t find that in our study,”lead researcher Christopher Slatore，of the University of Washington Seattle，said．

The subjects of the study were followed for four years，and 521 developed lung cancer，the majority of them smokers or former smokers，Slatore’s team reported in the American Journal of Respiratory and Critical Care Medicine．

Among those in the study who developed lung cancer, the researchers saw a small increased risk related with vitamin E supplements(补充剂)in addition to the expected connections to smoking，family history and age．

This added up to a 28 percent increased risk of developing lung cancer for those taking 400 mg of vitamin E supplements daily for 10 years，the researchers said．

“For people―especially smokers―I suggest that they not take vitamin E(as a supplement) unless they have a very strong reason to take it．” Slatore said．

The idea that vitamin supplements are healthful，or at least not harmful．comes from the desire of many people to match the benefits of a healthful diet with a convenient pill，Tim Byers of the University of Colorado School of Medicine．wrote in an essay．

53．The writer thinks the statement“taking vitamins would reduce the risk of lung cancer，is .

A．wrong B．right C．doubtful D．possible

54．According to the study of researchers， may increase the risk of lung cancer.

A．the heavy smokers’sudden stop of smoking

B．use of multi-vitamins instead of a healthy diet

C．taking 400 mg of vitamin C supplements daily for a year

D．vitamin E supplements，smoking，family history and age

55．According to the passage，many people take vitamin supplements to

A．cure lung cancer caused by family history

B．prevent diseases like cancer and heart attack

C．save the trouble of making a healthful diet

D．reduce the pain caused by lung cancer

56．What is the main idea of the passage?

A．Taking vitamins would reduce the risk of lung cancer．

B．Vitamins are no guard against lung cancer．

C．Vitamin supplements are convenient and magic．

D．Vitamins ale harmful，or at least not healthful．

ADCB

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相关题目

阅读下列短文，从每题所给的四个选项A、B、C、D中，选出最佳选项。

　　Since 1989,Dave Thomas,who died at age 69,was one of the most recognizable faces on TV．He appeared in more than 800 commercials（商业广告）for the hamburger chain named for his daughter．“As long as it works,”he said in 1991,“I'll continueto do those commercials．”

　　Even though he was successful,Thomas remained troubled by his childhood．“He still won't let anyone see his feet,which are out of shape because he never had proper-fitting shoes,”Wendy said in 1993．Born to a single mother,he was adopted（收养）as a baby by Rex and Auleva Thomas of Kalamazoo in Michigan．After Auleva died when he was 5,Thomas spent years on the road as Rex travelled around seeking construction work．“He fed me,”Thomas said,“and if Igot out of line,he'd beat me．”

　　Moving out on his own at 15,Thomas worked,first as a waiter,in many restaurants．But he had something much better in mind．“I thought if I owned a restaurant,”he said,“I could eat for free．“A 1956 meeting with Harland Sanders led Thomas to a career as the manager of a Kentucky Fried Chicken restaurant that made him a millionaire in 1986．

　　In 1969,after breaking with Sanders,Thomas started the first Wendy's Old Fashioned Hamburgers,in Columbus,Ohio,which set itself apart by serving made-to-order burgers．With 6000．restaurants worldwide,the chain nowmakes $ 6 billion ayear in sales．

　　Although troubled by his own experience with adoption,Thomas,married since 1954 to Lorraine,66,and with four grown kids besides Wendy,felt it could offer a future for other children．He started the Dave Thomas Foundation（基金会）for Adaption in 1992．

　　In 1993,Thomas,who had left school at 15,graduated from Coconut Creek High School in Florida．He even took Lorraine to the graduation dance party．The kids voted him Most Likely to Succeed．

　　“The Dave you saw on TV was the real Dave,”says friend Pat Williams．“He wasn't a great actor or a great speaker．He was just Joe Everybody．”

(1)

What is the article mainly about?
[　　]
A．	The life of Dave Thomas．
B．	The dream of Dave Thomas．
C．	The schooling of Dave Thomas．
D．	The growth of Dave Thomas's business．

(2)

What do we know about his childhood?
[　　]
A．	He lived a poor life．
B．	He had caring parents．
C．	He stayed in one place．
D．	He didn't go to school．

(3)

Choose the right time order of the following events in Tho-mas's life a．graduated from high school b．started his own business c．became a millionaire d．started a foundation e．met Harland Sanders
[　　]
A．	e,b,c,d,a
B．	a,e,c,b,d
C．	e,c,b,d,a
D．	a,e,b,c,d

(4)

“He was just Joe Everybody．”(in the last paragraph)means ________
[　　]
A．	Dave was famous
B．	Dave was ordinary
C．	Dave was showy
D．	Dave was shy

(5)

What is the name of Dave Thomas's business?
[　　]
A．	Thomas's．
B．	Wendy's．
C．	Lorraine's．
D．	Rex's．

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为选项．

Ea sy Way s to Keep Your Brain Sharp

　　Everyone i s forgetful, but a s we age, we start to feel like our brain s are slowing down a bit-and that can be a very annoying thing．　　1　　 Read on for some technique s worth trying．

　　1．　　2　　

　　People who regularly made plan s and looked forward to upcoming event s had a 50 percent reduced chance of Alzheimer' s di sea se(老年性痴呆症)， according to a recent study．　　3　　 Something a s simple a s setting a goal to have a weekly coffee date with a friend will do．There' s evidence that people who have a purpo se in life or who are working on long or short-term goal s appear to do better．In other word s, keep your brain looking forward．

　　2．Go for a walk．

　　Mildly rai sed glucose(葡萄糖)level s can harm the area of the brain that help s you form memorie s and phy sical activity can help get blood glucose down to normal level s．In fact, exerci se produce s chemical s that are good for your brain．　　4　　

　　3．Learn something new．

　　Take a Spani sh cla s s online, join a drawing club, or learn to play card s．A study found that mental stimulation limit s the weakening effect s of aging on memory and the mind．But the be st thing for your brain i s when you learn something new and are phy sically active at the same time．　　5　　 Or you can ju st go dancing with your friend s．

A．Focu s on the future．

B．Thi s can be e specially harmful to the aged．

C．It should be something like learning gardening．

D．So take a few minute s each day to do some reading．

E．But don't worry if our schedule i sn't filled with life－changing event s．

F．Luckily, re search show s there i s a lot you can do to avoid tho se moment s．

G．In other word s, when you take care of your body, you take care of your brain．

Seven Health Facts about Coffee

Whe.n you’re consideringyour.morning coffee, here are some healthfacts to keep in mind:

1, Coffee Reduces Your Risk of Diabetes（糖尿病）

In a 2005 review of nine studies, researchers found that for those that drank four to six cups of coffee per day, versus only. Two or fewer, their risk for Type 2 diabetes decreased by almost 30 percent. The number decreased:d by 35 percent when people drank more than six cups per da3day.And if you’re picturing yourself f running around the’office with your eyes bugging out of your head, no worries because caffeinated and decaffeinated coffees provided much the same results.

2. Coffee Fights Free Radicals（自由基）

We often forget that coffee is actually a plant and like all plant foods, the coffee bean contains more than 1,000 naturally occurring substances called phytochemicals, which may help prevent disease. Many of these phytochemicals are antioxidants which protect the cells from damage from free radicals.

3. Coffee Improves Memory and Cognition

Researchers reported that volunteers who drank caffeinated coffee in the morning performed better than nondrinkers on tests that involved learning new information. Coffee can also improve cognitive function as we age. One study found that combining coffee with a sweet treat had an even bigger impact.

4. Coffee Can Increase Osteoporosis（骨质疏松）

It s true that coffee can cause the body to excrete calcium in urine. We don’t want the.body to rid itself of calcium because this can lead to osteoporosis. According to The Diet Channel,about five milligrams of calcium is lost per every six ounces of coffee consumed. But these calcium losses can be counter balanced with two tablespoons of milk or yogurt per cup of coffee.

5. Coffee Causes Wrinkles

Even tho,ugh coffee has antioxidants, if you drink too much of it, it can cause wrinkling of the skin. This is a result of dehydration(脱水) which is the worst thing for your skin. So when you’re drinking that morning cup or two, make sure that you’re pairing it with water. Even better,add one tablespoon of chia seeds to your water and let them sit for 30 minutes. The chia seeds keep you even more hydrated than regular water.

6, Coffee Can Actually Cause Weight Gain

The blood sugar changes that a caffeine high produces can contribute enormously to a strong desire for it,’according to iVillage. Coffee is also socially connected to food. For example,we pair coffee with dessert or that morning powdered doughnut. Additionally, when we crash fiom our caffeine high that’s when we reach for all sorts of fatty snacks’ to keep us going.

7. Conventional Coffee Is Laden with Pesticides（杀虫剂）

The coffee plant is one of the most heavily sprayed crops. Lt’s coated with chemicals,pesticides, and herbicides, nothing you’d want to be swallowing. If you do drink coffee, make sure that it’s the organic variety, free from assorted chemicals that.leech into our ground water and can make us sick down the road.

If you switch to decaffeinated coffee, make sure the caffeine（咖啡因） is removed in a natural way without the use of chemicals to do it. Often times, conventional decaffeinated coffee has more chemicals than regular.

41. If you want to decrease the risk of diabetes by 35070, you need to take at least cups of coffee every day.

A. seven B. six C. five D. four

42.lf you are a heavy drinker of coffee, a far better way to avoid wrinkling of your skin is to drink water .

A.less than usual B. regularly C. with sugar D. with chia seeds

43. Which of the following statements is wrong?

A. Adding two spoons of milk to a cup of coffee can prevent calcium losses.

B. Decaffeinated coffee has different effects from caffeinated coffee as to diabetes.

C. Many phytochemicals protect the cells from damage from fiee radicals.

D. The organic variety of coffee p/ant is free from assorted chemicals.

44. The author has a/an attitude towards drinking of coffee.

A. positive B, negative C. objective D. imaginative

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