Potatoes Gives Your Immune System a Boost

第1题

Eating potatoes gives your immune system a boost Eating potatoes is not only good for

Eating potatoes gives your immune system a boost

Eating potatoes is not only good for bowel health，but also for the whole immune system，especially when they come in the form. of a potato salad or eaten cold． In a study on an animal model，researchers in Spain found that pigs fed large quantities of raw potato starch（RPS）1 not only had a healthier bowel．but also decreased levels of white b1ood cells，such as leucocytes and 1ymphocytes in their blood． White blood cells are produced as a result of inflammation or disease，generally when the body is challenged．

The general down—regulatjon of leucocytes observed by the Spanish researchers suggests an o-verall beneficial effect，a generally more healthy body2． The reduction in leucocyte levels was about 15 percent．Lower lymphocyte 1evels are also indicative of reduced levels of inflammation，but the observed reduction in both lymphocyte density and lymphocyte apoptosis is surprising.

In what was the 1ongest study of its kind，pigs were fed RPS over 14 weeks to find out the effect of starch on bowel health． “The use of raw potato starch in this experiment is designed to simulate the effects of a diet high in resistant starch”，said study leader Jose Francisco Perez at the Universitat Au-tonoma de Barcelona3，Spain．

Humans do not eat raw potatoes，but they do eat a 1ot of foods that contain resistant starch，Such as cold boiled potatoes，legumes，grains，green bananas，pasta and cereals．About 10 percent of the starch eaten by human is resistant starch-starch that is not digested in the small intestine and so is shunted into the large intestine where it ferments．Starch consumption is thought to reduce the risk of large bowel cancer and may also have an effect on irritable bowel syndrome（IBS）4．

Immunology expert Lena Ohman’s team previously found that the overall lymphocyte levels do not vary for IBS patients，but that lymphocytes are transferred from the peripheral blood to the gut，which support the hypothesis of IBS being at least partially an inflammatory disorder．She says the de-crease in lymphocytes observed by the Spanish is therefore interesting，and a diet of resistant starch

may be worth trying in IBS patients．Ohman is currently at the Department of Internal Medicine，Goteborg University，Sweden5．The study is published in the journal Chemistry and Industry，the magazine of the SCl6．

第 41 题 What a form. of potato is the most nutrient to the human body？

A．Potato soup．

B．Potato cake．

C．Potato salad．

D． Hot boiled potato．

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第2题

Eating Potatoes Gives Your Immune System a BoostEating potatoes is not only good for bowel

Eating Potatoes Gives Your Immune System a Boost

Eating potatoes is not only good for bowel health, but also for the whole immune system, especially when they come in the form. of a potato salad or eaten cold. In a study on an animal model, researchers in Spain found that pigs fed large quantities of raw potato starch (RPS) not only had a healthier bowel, but also decreased levels of white blood cells, such as leucocytes and lymphocytes in their blood. White blood cells are produced as a result of inflammation or disease, generally when the body is challenged.

The general down-regulation of leucocytes observed by the Spanish researchers suggests an overall beneficial effect, a generally more healthy body. The reduction in leucocytes levels was about 15 percent. Lower lymphocyte levels are also indicative of reduced levels of inflammation, but the observed reduction in both lymphocyte density and lymphocyte apoptosis is surprising.

In what was the longest study of its kind, pigs were fed RPS over 14 weeks to find out the effect of starch on bowel health. "The use of raw potato starch in this experiment is designed to simulate the effects of a diet high in resistant starch. " said study leader Jose Francisco Perez at the University Autonoma de Barcelona, Spain.

Humans do not eat raw potatoes, but they do eat a lot of foods that contain resistant starch, such as cold boiled potatoes, legumes, grains, green bananas, pasta and cereals. About 10 percent of the starch eaten by human is resistant starch--starch that is not digested in the small intestine and so is shunted into the large intestine where it ferments. Starch consumption is thought to reduce the risk of large bowel cancer and may also have an effect on irritable bowel syndrome (IBS).

Immunology expert Lena Ohman's team previously found that the overall lymphocyte levels do not vary for IBS patients, but that lymphocytes are transferred from the peripheral blood to the gut, which support the hypothesis of IBS being at least partially an inflammatory disorder. She says the decrease in lymphocytes observed by the Spanish is therefore interesting, and a diet of resistant starch may be worth trying in IBS patients. Ohman is currently at the Department of Internal Medicine, Goteborg University, Sweden. The study is published in the journal Chemistry and Industry, The magazine of the SCI.

What form. of potato is the most nutrient to the human body？

A．Potato soup.

B．Potato cake.

C．Potato salad.

D．Hot boiled potato.

点击查看答案

第3题

Part BDirections: You will hear four dialogues or monologues. Before listening to each one

Part B

Directions: You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.

听力原文： Columbus sailed from Spain in September 1492, looking for gold. Native Americans greeted him, offering gifts of corn. Columbus found little gold on that trip, but he collected many plants, including com, to bring back to Spain.

Columbus didn't know it. But the corn was much more valuable than gold. Farmers from Europe to Asia accepted it immediately. They grew it on cold mountainsides and in tropical forests. Today it feeds millions of people all over the world.

On his second trip, Columbus brought back a few chocolate beans to make chocolate. Europeans and Asians love this new drink, and soon they were paying a great deal of money for the beans. Chocolate beans became so valuable in Central America that they were used as cash for 200 years.

Tomatoes and potatoes took some time to become popular. Eventually, however, they became the basis of a lot of popular foods. It is hard to imagine life without fried potatoes or chocolate. Thanks to native American cultures, many people are able to enjoy lots of tasty food.

Why is corn feeding millions of people today？

A．It can be cooked in many ways.

B．It is delicious but inexpensive.

C．It gives higher yields than other grain crops.

D．It grows easily in various conditions.

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第4题

听力原文：W: I thought that your potatoes are seventy cents a pound.M: They used to, but th

听力原文：W: I thought that your potatoes are seventy cents a pound.

M: They used to, but the price has gone up thirty cents.

Q: How much will the woman pay if she buys two pounds of potatoes？

(3)

A．$1.00.

B．$2.20.

C．$0.30.

D．$2.00.

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第5题

Waitress：How do you want your potatoes？Mashed，fried or baked？Customer：__________．A.Yes，ple

Waitress：How do you want your potatoes？Mashed，fried or baked？Customer：__________．

A.Yes，please

B.No，thank you

C.Neither，thank you

D.Baked potato，please

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第6题

Choose the best choice according to the cultural context. You are eating a meal with your

American friend, and you think that the potatoes you are eating are really delicious. You want your friend to try some. You should:

A．Put a spoonful of your potatoes on his plate and encourage him to try them．

B．Ask him if he wants to try any．

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第7题

Foods like bread and potatoes are fattening（使发胖). Some people think that chicken soup i

Foods like bread and potatoes are fattening(使发胖). Some people think that chicken soup is good for a cold. A vegetarian diet is unhealthy. A study in 2002 showed that black or green tea contains substances that can protect your heart, fight cancer and make fat less in your body.

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第8题

Choose the best choice according to the cultural context. You are eating a meal with your American friend, and you think that the potatoes you are eating are really delicious. You want your friend to

A．Put a spoonful of your potatoes on his plate and encourage him to try them．

B．Ask him if he wants to try any．

点击查看答案

第9题

Section BDirections: This section is to test your ability to understand short dialogues. T

Section B

Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D.

听力原文：Excuse me，how much are the potatoes？

(1)

A．Five yuan a kilo．

B．They are expensive．

C．They are good．

D．They are delicious．

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第10题

If he （gives) a chance to （enroll) in your university, I'm sure he （will prove) his （worth

If he (gives) a chance to (enroll) in your university, I'm sure he (will prove) his (worth).

A．gives

B．enroll

C．will prove

D．worth

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Potatoes Gives Your Immune System a BoostEating potatoes is not only good for bowel health