Chocolate is good for your heart, skin and brain.Usually, people think that chocolate is bad for their health.They describe chocolate as“something to die for”or say“death by chocolate”.Now they should bite their tongues! Evidence is showing that some kinds of chocolate are actually good for you in the following ways:
A happier heart
Scientists at Harvard University recently examined 136 studies on cocoa—the main ingredient in chocolate and found that it does seem to strengthen the heart.Studies have shown heart benefits from increased blood flow.These benefits are the result of coca’s chemicals, which seem to prevent both cell damage and inflammation(炎癥).
Better blood pressure
If yours is high, chocolate may help.Jeffrey Blumberg from Tufts University recently found that people with high blood pressure who ate 3.5 ounces of dark chocolate per day for two weeks saw their blood pressure drop quickly.
Muscle magic
Chocolate milk may help you recover after a hard workout(鍛煉).In a small study at Indiana University, people who drank chocolate milk between workouts did better on a tiredness test than those who had some sports drinks.
Better for your skin.German researchers gave 24 women a half-cup of special cocoa every day.After three months, the women’s skin was moister(滑潤(rùn)的)and smoother.The research shows that chocolate helps protect and increase blood flow to the skin, improving its appearance.
Brain gains
It sounds almost too good to be true, but research suggests that chocolate may improve your memory, attention span, reaction time, and problem-solving by increasing blood flow to the brain.
52. What’s the meaning of “bite their tongues”in the first paragraph?
A. Stop talking.          B. Speak up.              C. Think of it.            DvListen to it
53. What’s the meaning of the underlined sentence in the fourth paragraph?
A. Sports drinks are better than chocolate milk.
B. Sports drinks can make people easy to be tired.
C. Drinking milk can keep you energetic at work.
D. We should drink chocolate milk between times when we work hard.
54. The conclusion that chocolate may help lower blood pressure was made by_________.
A. scientists at Harvard University
B. Jeffrey Blumberg from Tufts University
C. scientists at Indiana University
D. German researchers
55. What’s the best title for this passage?
A. Chocolate, a Healthy Food                             B. More Chocolate, Less Health
C. Chocolate and Blood Pressure                        D. Advice on Eating Chocolate
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語(yǔ) 來(lái)源:不詳 題型:完形填空


SECTION B
Directions: Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet.
The unsteady housing market is showing a rare sign of strength: waiting home sales were up significantly in February, a report released Monday said, suggesting that Americans took advantage of a tax credit for home buyers.
Sales rose 8.2 percent in February, the National Association of Realtors(房地產(chǎn)經(jīng)紀(jì)人) said. Analysts had expected sales to stay flat.
Economists said Monday’s data suggested buyers were re-entering the market as the April 30 deadline approached for a government tax credit of up to $8,000. The tax credit drove up sales rapidly in the fall, when it was originally set to end, but it has been slow to push the market this spring.
Lawrence Yun, chief economist for the association, said Monday’s report “may signal the early stages of a second wave of home sales.”
A separate report on Monday showed the service division in the United States was improving, driven in part by gains in employment.
The Institute for Supply Management’s non-manufacturing barometer(晴雨表) rose to 55.4 in March, up from 53 in February, going beyond expectations. Much of the energy came from a rush in new orders and business activity.
It was the highest reading(測(cè)量或調(diào)查的讀數(shù)) for the survey since May 2006. While employment rose, it was short of the break-even point, signaling the service division was still losing jobs. Exports also rose significantly.
“This is a very encouraging report, which indicates acceleration in demand growth from both domestic and foreign customers,” Barclays Capital researchers wrote in a note on Monday.
The jump in waiting home sales was a rare bit of good news for the housing market, which remains in a deep rut(車(chē)轍). Home prices have shown little change.
Analysts expect the housing market to gradually improve as unemployment becomes less and the broader recovery gains steam. But so far, relief has been slow to come.
Monday’s report showed sales rose even in areas hit hard by poor weather in February. Sales climbed 9 percent in the Northeast and South, which were blanketed by snow in February.
The Realtors association bases its data on signed contracts, which usually take one or two months to translate into final sales.
81. What is the effect of the government tax credit? (No more than 5 words)
__________________________________________________________________
82. Who is chief economist for the National Association of Realtors? (No more than 2 words)
_______________________________________________________________________________
83. What could be a surprise according to Monday’s report? (No more than 10 words)
_______________________________________________________________________________
84. If you are asked to describe the rise in home sales in February, which word do you think is the most appropriate? (No more than 1 word)
______________________________________________________________________________

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Making lists is relaxing. It dictates the shape of the immediate future; it calms you down (it’s OK, it’s on a list somewhere) and it makes you feel good when you cross something off List-making is standard practice in therapy for depression). It might even help you to get things done too. The more you have to do, the more you need a list and few people with high-powered jobs get by without them. Women always think they’re better at lists than men. Men tend to have tasks which they assemble ’into Action Plans whereas women just have lists of Things To Do.
James Oliver, psychologist, has created his own “time management matrix (模式)”. He writes a list of things to do and then organizes them into categories: things that have to be done straight away, other things that it would be good to do today, things that are important but haven’t got to be done immediately and things that are less urgent but that he doesn’t want to forget. “Using categories to order the world is the way the human mind works,” he says. “After that, you should divide things into levels of importance.” But he also warns, “If people get too absorbed in making lists, it doesn’t work. They have too many categories and lose their ability to decide which is the most important.”
It’s all a question of what works best for you, whether it’s a tidy notebook, a packet of Post-it notes or the back of your hand. Having tried all these, student Kate Rollins relies on a computerized list, which is printed out each morning. “My electronic organizer has changed my life,” she says. “Up to now, I’ve always relied on my good memory, but now that I’m working and studying, I find I’ve got too much to keep in my head.”
So what are you waiting for? No, you’re not too busy to make today the first day of your upgraded time-managed life. In fact, there’s no better time than the present to begin to take increased control of your work and life. So, get out your pencil and pen and make a list.
小題1:The main purpose of making lists is to      .
A.help map out one’s futureB.divide things into levels of importance
C.treat certain diseases such as depressionD.organize one’s work and life reasonably
小題2:We can learn from the passage that    .
A.good memory helps in list makingB.too much listing might be misleading
C.women usually make a lot more lists than menD.people with high-powered jobs make lists most
小題3:In this passage the author intends to   .
A.suggest a way of raising one’s living standardB.introduce some ways of business management
C.urge people to develop the habit of listingD.warn people not to rely on their memory

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:完形填空

任務(wù)型閱讀(共5小題,每小題2分,滿(mǎn)分10分)
在第76至80題中,Celia, Enoch, Martina, Brian和Derek準(zhǔn)備選擇一所大學(xué)就讀。閱讀下面六所大學(xué)的介紹(選項(xiàng)A、B、C、D、E和F),選出符合各人需求的最佳選項(xiàng),選項(xiàng)中有一項(xiàng)是多余選項(xiàng)。
1  Celia’s mother is a nice kindergarten nurse and when she was very young she was in close touch with children. With time passing by, she has got interested in early children education and has made up her mind to follow her mother.
2   Enoch is from Texas of US whose grandparents were black slaves who worked on a south plantation(大種植園). He has learned some about his ancestors’ miserable past and wants to study the Black People in US. Also, he hopes the university will offer the dormitory equipped with the Internet so that he can have a good connection with his friends.
3   Martina’ mother, as well as many of her relatives, is an active member of the Women’s Right Movement. Influenced by them, Martina thinks highly of their work and takes part in their activities from time to time. She has decided to do more studies about the Women’s Right Movements after she graduates from school.
4  Brian expects to head for an exciting and challenging major which makes humans live better and longer when he enters university. What’s more, he is energetic and eager for an environment which is convenient for outdoor activities such as hiking , rafting so that he can enjoy a long life.
5   With the coming of IT age, Derek is determined to find a college or university where he can have cost-effective life-long learning with high quality so as so meet the needs of a changing and developing world. Then, can you guess what his head-for major may be?
A. Most exciting and full of opportunity, challenges and self-discovery, this university combines urban cultural lifestyle with small town safety. It has a mild climate and is ideal for outdoor activities such as hiking, rafting. Its main majors are Education, Engineering, Physical / Life Sciences and so on.
B. It is a community college located next to a famous resort town offering technical programs for students. Its task is to provide a comprehensive, student-centered college education and use a variety of teaching methods in the classroom. It owns the following majors: Music, Early Childhood Education, Economics and so on.
C. Our college is to achieve and maintain recognized excellence in education, service and leadership within a changing world. It is cost-effective life-long learning and prepares students for great careers. Its majors are Information Technology, Professional and Career Development Programs, Social Sciences and some others.
D. As a state-assisted private university, it was founded in 1929. The campus has grown significantly in size and scope. Residence halls are equipped with Internet access. The university offers 117 different majors including Art, Environmental Sciences, Black Affairs Studies Program, Industrial and Manufacturing Engineering and so on.
E. This University has earned a reputation for providing quality education to meet the needs of students preparing for new careers of tomorrow. It is close to the city of Detroit , with a safe environment. The following majors are offered: Philosophy, Psychology, Women’s Studies Program, Social Work, etc.
F. In our university, students are treated as individuals, and are helped to be good at academics, art, music. Personalized instruction in a small classroom setting is possible. Students interact one-on-one with highly qualified professors. Our main majors are: Math / Computer Sciences, Social Sciences / Humanities and so on.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解


第三部分:閱讀(共15小題;每小題2分,滿(mǎn)分30分)
閱讀下面短文,從每題所給的A、B、C、D四個(gè)選項(xiàng)中選出最佳選項(xiàng),并在答題卡上將該項(xiàng)涂黑。
If you think American cooking means opening a package and throwing the contents into the microwave oven (微波爐), think again. On one hand, it’s true that many Americans have cold cereal  ( 谷類(lèi)食品 ) for breakfast, sandwiches for lunch and instant dinners. From busy homemakers to working people, many Americans enjoy the convenience of fast food that can be ready to serve in 10 minutes or less. On the other hand, many Americans realize the importance of cooking skills. Parents-especially mothers-see the importance of training their children- especially daughters. Most Americans think that there’s nothing better than a good home-cooked meal. But with cooking, as with any other skill, good results don’t happen by accident.
Probably every cook has his or her own way of cooking. But there are some basic skills that most people follow. For example, baking is a main method of preparing food in America. For that reason, Americans would find it next to impossible to live without an oven. American cooks pay special attention to the balance of foods, too. In planning a big meal they try to include meat, a few vegetables, some bread and often a dessert. They also like to make sure the meal is colouful. Having several different colors of food on the plate usually makes for a healthy meal.
For those who need guidance in their cooking, or for those who have just run out of ideas, recipes are a great help. Recipes list all the ingredients for a dish ( generally in the order used ), the amount of each to use, and a description of how to put them together.
61.This passage mainly tells us that _______________.
A.Americans usually have fast food, but they pay special attention to cooking as well.
B.without an oven, Americans find it impossible to live conveniently.
C.Americans pay special attention to recipes and nutritious meals.
D.Americans like to have several different colors of food on the plate.
62.The underlined word “ convenience “ in the first paragraph means _______________.
A.the lower and acceptable price
B.being suitable to one’s comfort or needs.
C.The high quality and low price.
D.The unusual taste of the food.
63.Many Americans have cold cereal for breakfast, sandwiches for lunch and instant dinner because ______________.
A.they like instant food very much
B.they don’t like cooking at all.
C.most American working people are busy and don’t have time to cook
D.fast food is delicious and it usually contains a lot of vitamins.
64.By saying “ But with cooking, as with any other skill, good results don’t happen by accident, the author means _____________.
A.good cooking doesn’t come easily; it needs a lot of practice
B.just like any other skill, cooking may bring good results
C.cooking comes from one’s gift, not through practice
D cooking can lead to accidents
65.From the passage, we know that _____________.
A.Americans don’t care about food
B.Americans are not good at cooking because they like to use recipes
C.an oven plays an important role in cooking for Americans
D.while cooking, Americans usually run out of ideas

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解


Indonesia is known as the country of islands. It has 17,508 islands. But in recent years, the popular tourist destination has lost some of its shine.
Due to rising sea levels caused by global warming, 24 Indonesian islands have gone under the sea. Scientists say 2,000 more will disappear before 2030. In the past three years, the Southeast Asian nation also witnessed its islands destroyed by a tsunami(海嘯) and typhoons.
“If no measures are taken to fight climate change, the beautiful islands will go forever,” scientists told environmental ministers from about 190 countries at a UN climate change meeting.
This week they are meeting in Bali, an Indonesian island. They are trying to reach a deal to cut the world’s emissions (排放) of CO2 , which makes the Earth warmer.
Indonesia is not alone. This year has seen more extreme weather hit the world. Canada and US suffered heavy storms and typhoons, while Australians were caught in the heaviest drought in a century.
In China, the average temperature this year went up by 1.2oC from last year, reaching the highest on record since 1951.
However, other parts of the country got too much rain. More than 700 people were killed in floods, landslides and storms. “These weather extremes are the more obvious effects of global warming,” said Song Lianchun, a climate expert.
Scientists say time is running out. To escape from the worst effects, global CO2 emissions need to be cut from the levels they were at in 2000 by 50 to 85 percent by 2050.
But in recent years climate change talks have been bogged down by arguments over who will pay the bill for cleaner technology. Developing countries are worried that the cut in emissions will slow their economic development.
“China will play a responsible and constructive rule in the meeting,” said Chinese Premier Wen Jiabao. The nation is now the world’s second largest greenhouse gas emitter(排放者). “However, developed nations should help developing nations deal with the global issue.”
53. Which of the following is in the correct order?
a. More and more islands are going under the sea.
b. The sea levels are continuously rising.
c. The weather is getting warmer and warmer.
d. Emission of CO2 is increasing.
A. a b c d         B. b c d a         C. c b a d       D. d c b a
54. What does the underlined phrase “weather extremes” mean in the passage?
A. Rising temperature all over the world.
B. Bad weather like floods, drought, and landslides, etc.
C. The disappearance of more and more farmland.
D. Different amount of rain in different areas.
55. Climate change talks have been stopped because countries cannot agree on ______.
A. who should be responsible for causing climate change
B. who will pay for the cleaner technology needed 
C. whether developed countries should help developing ones
D. whether developing countries should cut emissions of CO2
56. What is China’s attitude towards dealing with problems of climate change?
A. China will pay for the cleaner technology.
B. China will take an active part in dealing with climate change.
C. China thinks it is developed countries’ responsibility.
D. China will depend on developed countries to help it.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解


BELIEVE it or not, the color of the tie Barack Obama wears to the inauguration(就職典禮) is now a hotly debated topic. The level of public interest in Obama’s tie might seem strange but many people believe his choice will symbolize the type of government he plans to run, as the color of a politician's tie is thought to convey ideas of power, trustworthiness and more.
Polities of ties
It may be the least practical item of male dress, but it is arguably the most expressive. In the UK and many other countries around the world, conservative(保守的)politicians may wear a blue tie and their liberal opponents a red one. In America, the colors go the other way round. The Republicans have in recent years become associated with the color red, and the Democrats with blue. But in spite of this, Bush wears blue ties more often than any other color.
What they mean
According to Sharon Haver, editor of focusonstyle, com, in America the feelings associated with colors overrule (壓制) their political significance. “A guy who wants to be regarded as strong and in charge would wear red,” Haver says. Unsurprisingly, the business tycoon Donald Trump is known for wearing red ties. But what about blue? According to Haver, “Blue is a softer color…Look at the sky. It's peaceful and calm and trustworthy.”
Selecting the right tie for the right occasion
● Perfect job interview tie
Perhaps no other tie-wearing occasion is as important as the job interview. Gilchrist, the fashion expert, advises playing it safe and choosing a conservative one. Best choices are solids, stripes or small patterns. An excellent color is burgundy(酒紅色)or another serious color. Avoid pink or yellow, which suggest that the wearer lacks gravity.
Pattern ties, Gilchrist suggests, should be limited to a maximum of three colors. A striped tie is a safe choice as this is acceptable to everyone. Last, Gilchrist recommends saving the expensive “hip” tie for those applying for glamorous creative jobs.
● Date-night tie
When picking out the fight tie for taking a girl out on a date, spend more time considering color than pattern. According to studies, women are attracted to men wearing the color blue, because blue gives the image of a "stable, faithful, constant, always there" person. So what is the worst color to wear on a date? “flattened caterpillar(毛蟲(chóng))yellow-green”, according to Gilchrist, “it will repel both sexes equally.”
52.Why are people interested in the tie that Obama wears to the inauguration?
A.Because they think the tie he wears will enable them to know about his personalities and policies.
B.Because they want to advise him on how to select an appropriate tie for such a big
occasion.
C.Because they think the ties will tell if he is trustworthy as they expected when he assumes
office.
D.Because they believe the tie is an essential part of dressing to a mature politician like
Obama.
53.What can we infer about Bush, the former president, from the passage?
A.He was probably liberal in his policies when he was in power.
B.He was a Republican when he served as president.
C.He wore only blue ties and had no ties of alternative colors.
D.He wanted to make himself unique by the tie that he wore.
54.The example of "the business tycoon Donald Trump" is given to________
A prove that color reflects people's feelings to a certain degree.
B.show that Donald is so wealthy that he can afford expensive ties.
C.tell that Donald is physically strong and can handle everything.
D.explain that red is a popular color, especially with businessmen.
55.Which of the following statements is TRUE according to the text?
A.Ties can be ignored by politicians since it is the least practical item of male dress.
B.Do choose ties carefully before dating, because it is the most important occasion.
C.Why to avoid pink or yellow in job interviews is that they don't match the atmosphere.
D.The more colorful the tie is, the more likely you'll get the job you want.
56.The underlined word "repel" in the last paragraph is most close to “________”in meaning.
A.puzzle     B.a(chǎn)ttract   C.delight     D.disgust

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解


   The old man walked with a cane(拐杖) slowly into the restaurant. His poor jacket, patched (打補(bǔ)丁的) trousers, and worn-out shoes made him stand out from the usual Saturday morning breakfast crowd. Unforgettable were his pale blue eyes that were bright like diamonds, large rosy cheeks, and thin lips held in a smile.
He walked toward a table by the window. A young waitress watched him and ran over to him, saying, “Here, Sir. Let me give you a hand with that chair.”
Without a word, he smiled and nodded a thank you. She pulled the chair away from the table. Steadying(穩(wěn)住) him with one arm, she helped him move in front of the chair, and get comfortably seated. Then she pushed the table up close to him, and leaned his cane against the table where he could reach it.
In a soft, clear voice he said, “Thank you, Miss.”
“You are welcome, Sir.” She replied. “My name is Mary. I’ll be back in a moment. If you need anything, just wave at me!”
After he had finished a hearty meal of pancakes, bacon, and hot lemon tea, Mary brought him the change, helping him up from his chair and out from behind the table. She handed him his cane, and walked with him to the front door. Holding the door open for him, she said, “Come back and see us, Sir!”
He nodded a thank you and said softly with a smile, “You are very kind!”
When Mary went to clean his table, she was surprised. Under his plate she found a business card and a note written on the napkin, under which was a $100 bill.
The note on the napkin read, “Dear Mary, I respect you very much, and you respect yourself, too. It shows by the way you treat others. You have found the secret of happiness. Your kind gestures will shine through those who meet you.”
The man she had served was the owner of the restaurant. This was the first time that she, or any of his employees, had seen him in person(親自).
71. The relationship between the old man and Mary was ______. 
A. father and daughter                B. employer and employee
C. waiter and customer                         D. uncle and nephew
72. Based on the passage, all of the following words can be used to describe Mary except _____.
A. kind       B. considerate       C. helpful       D. calm
73. Mary ran over to the old man because _______.
A. the old man was the boss of the restaurant
B. she saw the old man had some difficulty moving and taking a seat
C. she was worried that the old man might cause trouble to the restaurant
D. the old man had asked her to wait on him
74. The man came to the restaurant _______.
A. to have breakfast
B. to see his employees
C. to find out how his restaurant was working
D. to see how Mary served customers
75. The words the man left on the napkin indicated that _______.
A. respecting others means respecting oneself
B. serving others is a respectable job
C. Mary would get a rise as a result of her kindness
D. Mary’s kind service would bring in more money for her

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解


There are some kinds of detectives who do not wear a uniform, like Hausman, solve endless mysteries every year. There is, for example, the dust detective. Tiny bits of dust stick to your clothes, your fingernails, your hair, or your shoes. They catch in your nose and in your ears. They tell where you have been and what you have done lately. The dust detective often helps catch a criminal by proving that he has been on the scene of the crime(罪案).
Then there is the wood detective. By studying a piece of wood he can tell what kind of tree the piece of wood came from. He can tell where it was grown, and how old it is. He can even tell you what the weather was like at a certain place the year Columbus landed in America. The growth rings on a tree tell him.
64.According to the selection, by studying a piece of wood, a wood detective can tell you________.
A.what the weather was like the year Columbus landed in America.
B.what the weather was like last year in the mountain
C.what the weather was like last month in your hometown
D.what kind of tree the piece of wood came from
65.What does the underlined word “they”(para. 1) mean?
A.Your clothes           B.Your finger-nail
C.Tiny bits of dust        D.Your shoes

查看答案和解析>>

同步練習(xí)冊(cè)答案