Can eating a chocolate bar every day really prevent age-related memory loss? No. But a new research shows that large amounts of flavones, substances found in cocoa, tea and some kinds of vegetables, may improve age-related memory failure.
Dr. Scott Small is a professor of neurology (神經病學) at Columbia University in new York City. He is the lead writer of a research paper describing the effects of cocoa flavones on brain activity. His study involved 37 volunteers aged between 50 and 69. Researchers gave them a high-level flavones drink made from cocoa beans or a low-level flavones drink. For a period of three months, some subjects got 900 milligrams of flavones a day. The others got 10 milligrams of flavones each day. Brain imaging and memory tests were given to each study subject before and after the study. Dr. Small says that the subjects who had the high-level flavones drink showed much improvement on memory tests.
The researchers warn that more work is needed to be done because this study was performed only on a small group. Dr. Joann Manson is the lead researcher of a four-year study involving 18,000 adults. This study will use flavones capsules(膠囊). The study subjects will be divided into two groups and will take two pills per day. The capsules used will all look the same. But one group's capsules will contain flavones, while the other group will take capsules made of an inactive substance, or placebo
Dr. Manson says it's not necessary for people to start eating more chocolate, because a person would have to eat a huge amount of chocolate to get the same level of flavones given to the rest subjects. He adds many manufacturers have planned to remove the flavones from their chocolate products. Similarly, Dr. Manson says a cocoa-based flavones extract(提取)may be developed in the future But he says that more studies are needed to see how much flavones is good for our health.
1.What was done to the subjects after Dr. Small’s study?
A. They were asked to take a high-level flavones drink.
B. They were given capsules containing flavones.
C. They were given brain imaging and memory tests.
D. They were asked to take two pills of flavones capsules per day.
2.What's the similarity of the two experiments?
A. Both use high-level flavones capsules.
B. The number of the subjects is the same.
C. Drinks and placebos are used in both experiments.
D. The subjects are divided into two groups in both experiments.
3.Why will Dr. Manson carry out the four-year study?
A. To prove the first experiment is wrong.
B. To carry out the experiment further.
C. To test how much flavones can improve our memory.
D. To show eating chocolate is better to improve memory.
4.What can we learn from the last paragraph?
A. It’s not necessary for us to eat chocolate.
B. The more we eat flavones, the better our health will be.
C. In the future we can get flavones without eating chocolate.
D. It’s easy for people to get the same level of flavones given to the test subjects.
科目:高中英語 來源:2016屆新疆兵團農二師華山中學高三上學期第一次月考英語試卷(解析版) 題型:其他題
根據(jù)短文內容,從短文后的選項中選出能填入空白處的最佳選項。選項中的兩項為多途選項。
What is a big dream ? 1.________ Or , is a big dream something that provides only entertainment? Children dream big dreams, but there are three barriers to realizing dreams. They often kill them before they ever have a chance to grow.
The Self
Immediately following the birth of a big dream, a negative self-talk takes over and gives all the reasons why it cannot happen. This inside voice is the ego(自我). It’s there for protecting and should be listened to. 2.________ Most people are influenced by the inside voice. That’s why only a handful of people make their dream come true.
3.________
Family and friends are a lot like the ego. They want to protect those they love, so they will often list all the reasons why the big dreams won’t come true. Sometimes, family and friends destroy dreams of those they love most, out of their own fear of being left behind.
The World
If one gets past the first two barriers, one has to face the world. 4. ________ In the past, big dreamers were locked up and sometimes even killed when they were shown to the world. Fortunately, in most of the world today, big dreamers just get laughed at.
The way to realize a big dream is with confidence and action. When children have confidence and then take action, they will be ready to accept any failure. The truth is that every great dreamer whose dreams have never seen the light of success knows failure well.
5.________
A. Family and Friends
B. How Big Dreams Die
C. Does a big dream show one’s future ?
D. They simply fail until they succeed.
E. It is the last and the most terrible barrier.
F. Sometimes it is right, but more often it is wrong。
G. And their big dream is to be a rock star or a famous artist.
查看答案和解析>>
科目:高中英語 來源:2015-2016學年江西鉛山一中橫峰中學兩校高二上學期期中英語試卷(解析版) 題型:完形填空
閱讀下面的短文,從短文后各題所給的四個選項(A、B、C和D)中,選出可以填入空白處的最佳選項,并在答題卡上將該項涂黑。
In France, there once lived a famous man named the Marquis de Lafayette. When he was a little boy, his mother called him Gilbert.
Gilbert’s father and grandfather had both been ________ men in his village. He was proud of them, and he ________ that he might grow up to be like them.
Gilbert’s home was near a ________. One day word came that a cruel ________ had been seen in the woods. Men said it had killed many of the villagers’ sheep. Gilbert was only seven, but all his ________ were about the cruel animal.
“Shall we take a ________ ?” asked his mother.
“Oh, yes!” said Gilbert. “We may see that wolf in the forest. But don’t be ________.”
His mother smiled, ________ she felt quite sure that there was no ________ .
They did not go far into the woods. The mother sat down under a tree and began to ________ . Seeing Mom interested in her book, Gilbert decided to ________ the animal. He walked quietly into a wilder place. He looked ________ around, but saw only a rabbit.
Then, ________ , he heard footsteps. He stood still and ________, When the animal was very ________ to him, he jumped out of his hiding place and held it round its neck. It did not try to bite. But it threw Gilbert upon the ________ .
Gilbert was soon on his feet again. He was not ________ at all. He looked at the animal: It was not a wolf but a calf(牛犢).
The boy felt very ________ . He hurried back to his mother, tears in his eyes. He told her what had happened.
His mother said, “You were very ________ . You are my hero because you ________ what you thought was a great danger and you were not afraid.”
1.A. famous B. wise C. brave D. generous
2.A. wished B. guessed C. realized D. believed
3.A. mountain B. forest C. farm D. river
4.A. tiger B. lion C. bear D. wolf
5.A. thoughts B. questions C. plans D. complaints
6.A. bath B. picture C. walk D. break
7.A. tired B. afraid C. cruel D. surprised
8.A. so B. once C. but D. for
9.A. danger B. wonder C. use D. point
10.A. sing B. read C. sleep D. draw
11.A. give up B. worry about C. look for D. ask about
12.A. angrily B. hurriedly C. proudly D. carefully
13.A. finally B. suddenly C. gradually D. strangely
14.A. listened B. cried C. waited D. watched
15.A. close B. familiar C. blind D. harmful
16.A. stone B. wall C. tree D. ground
17.A. defeated B. bothered C. frightened D. hurt
18.A. annoyed B. ashamed C. nervous D. excited
19.A. smart B. curious C. courageous D. lucky
20.A. faced B. avoided C. chose D. accepted
查看答案和解析>>
科目:高中英語 來源:2015-2016學年福建八縣一中高二上學期期中英語試卷(解析版) 題型:閱讀理解
H.T.B. Arts Center
FILM Tickets £2.50 / £ 1.50. Performances at 8 pm unless started otherwise.
WILD AT HEART 127mins.
Wen 6-Fri8 February
Director: David Lynch
Starring: Nicholas Cage, Laura Dern, Willam Dafoe. A first-class film. Cage and his girlfriend Dean are on the run through the dangerous Deep South. They are hiding from gunmen who have been hired to kill Cage by Dean's mother. Victims, yes—but they also have fun. It's wild at heart, strange on top. Funny, frightening and brilliant.
DICK TRACY 113mins
Mon 11-Sat16 February 6pm
Tickets on sale 5-6 pm
Director: Warren Beatty
Starring: Warren Beatty , Madonna The famous detective tries to stop Big Boy and the Blank from taking over the city. A colorful and exciting film. Some parts are frightening, so think twice about taking children.
BATMAN 126mins
Mon11-Sat16 February 8.30pm
Tickets on sale 7.30-8.30pm
PIZZA PLUS offer 6-7pm
Director: Tim Burton
Starring: Michael Keaton, Jack Nicholson. A few essential questions must be asked...Is Batman a mad hero? Why does Bruce Wayne spend millions dressing up as a bat? Has Nicholson's Joker stolen the whole movie? Great action and excellent acting, especially by Nicholson.
1.We know from Wild at Heart that
A. Wild at Heart is funny rather than frightening
B. Cage was not accepted by his future mother-in-law.
C. A famous detective happened to help Cage and Dean.
D. Cage and Dean are playing the hide-and-seek game with Dean’s mother.
2.According to the text, we can learn that _____.
A. Batman has the longest running time
B. One can buy tickets in advance for all the films
C. You’d better not take your children with you to see Dick Tracy
D. While watching Batman one can enjoy pizza at 7:30 pm.
3.Where can we most probably read this text?
A. In a movie review.
B. In an ad page.
C. In a short story.
D. In an introduction of an art center.
查看答案和解析>>
科目:高中英語 來源:2016屆山西大學附屬中學高三10月月考英語試卷(解析版) 題型:閱讀理解
My family moved from Taiwan to a small town in central Georgia, where my dad got a visa for his family and a job. I had just learned English, and from what little I could gather from my classmates, Santa Claus would come down one’s chimney and put toys in one’s stocking on Christmas Eve! What a great country, I thought. After I looked up “stocking” in my Chinese-English dictionary, I knew what I had to do.
On that fateful night, after everyone went to bed, I took my longest, cleanest knee sock and attached it to a nail already on the mantel(壁爐). Obviously, the previous owners of this house were no strangers to this Santa character.
I woke up before everyone else on Christmas Day and ran to the fireplace. To make a sob story short, I was hit with the reality of an empty sock and the biggest lie ever told. I burst into tears, quickly took down the sock, and stuffed it in the back of a drawer. Santa was dead.
Every December since then, the topic of Christmas memories would unavoidably come up, and I would amuse my friends with my poor-little-me story. I had to make it as funny as possible, or else I would cry.
How could I know that Santa was just late? Nine years ago, on Christmas Eve, an older man with a white beard and a red cap knocked on my front door. He said, “I’ve been looking for you for twenty-five years.” He handed me a bulging red stocking, winked, and left. On top of the stocking was a card. It read: “For Becky—I may have missed you in the second grade, but you’ve always lived in my heart. Santa.”
Through tear-blurred eyes, I recognized the handwriting of Jill, a friend I had met just two months before. I later discovered that the older man was her father. Jill had seen the hurt little girl underneath the thirty-something woman and decided to do something about it.
So now I believe that Santa is real. I don’t mean the twinkle-eyed character of children’s mythology or the creation of American holiday marketers. Those Santas annoy and sadden me. I believe in the Santa Claus that live inside good and thoughtful people. This Santa does not return to the North Pole after a crazy delivery but lives each day purposefully, really listens to friends, and then plans deliberate acts of kindness.
1.What does the underlined part “what I had to do” in Paragraph 1 refer to?
A. Waiting for Santa Claus.
B. Putting a stocking on the mantel.
C. Asking for gifts from her parents.
D. Looking up “stocking” in the dictionary
2.It can be inferred from the passage that the author’s parents ________.
A. didn’t love their child at all
B. didn’t know the previous owners of the house
C. didn’t know much about Christmas tradition
D. didn’t have enough money to buy the author Christmas presents
3.When the author told her friends about the story, she felt ________ in her heart.
A. proud B. amusing C. hate D. regret
4.The author of the passage is probably ________.
A. a teenager B. a primary school student
C. a middle-aged woman D. a native American
查看答案和解析>>
科目:高中英語 來源:2015-2016學年四川省高一上期中英語試卷(解析版) 題型:信息匹配
根據(jù)短文內容,從短文后胡選項中選出能填入空白處胡最佳選項。選項中有兩項為多余選項,此題答案請答在答題卡上。
Starting high school means changes in your life. Most teenagers look forward to the first day of high school, but still feel a little bit nervous. In order to make your high school life easier, 1.________
Learn all you can about your first day before the first school day. Take part in some activities that are held at the school for new students to know the school better. If parents are invited to these activities, take yours with you. Carefully look over all the materials you receive. 2.________
Get the things you will need for class. But the things suggested on your teachers’supply lists and place your materials for each class separately.
3.________If you find you’re not doing well in a subject, make use of after-school study groups or ask your teacher to help you with your schoolwork. Consider private tutoring to get you through a difficult time.
There’s more extracurricular(課外的) activities in high school than in middle school, such as clubs, music and theatre groups, student government, and sports teams. Make friends and be seen at such school activities. 4.________
Ask someone in the school office about opportunities to take part in school activities if you don’t know how. This is a good time to do what you like doing and an opportunity to try new things. Who said school has to be all work and no play?
Since you’re attending more activities in high school than in middle school, 5.________
A. you can follow these tips.
B. Keep up with your high school workload.
C. Here are some tips for you to follow,
D. All work and no play makes Jake a dull boy.
E. you’ll have to learn to manage your time.
F. Be sure you know where the school’s buildings are.
G. Join a club or other organizations to meet people and develop friendships.
查看答案和解析>>
科目:高中英語 來源:2016屆上海市高一下學期期末英語試卷(解析版) 題型:閱讀理解
In modern society there is a great deal of argument about competition. Some value it highly, believing that it is responsible for social progress and prosperity; others say that competition is bad; that it sets one person against another; that it leads to unfriendly relationship between people.
I have taught many children who held the belief that their self-worth relied on how well they performed at tennis and other skills. For them, playing well and winning are often life-and-death affairs. In their single-minded pursuit of success, the development of many other human qualities is sadly forgotten.
However, while some seem to be lost in the desire to succeed, others take an opposite attitude. In a culture which values only the winner and pays no attention to the ordinary players, they strongly blame competition. Among the most vocal are youngsters who have suffered under competitive pressures from their parents or society. Teaching these young people, I often observe in them a desire to fail. They seem to seek failure by not trying to win or achieve success. By not trying, they always have an excuse: “I may have lost, but it doesn’t matter because I really didn’t try.” What is not usually admitted by themselves is the belief that if they had really tried and lost, that would mean a lot. Such a loss would be a measure of their worth. Clearly, this belief is the same as that of the true competitors who try to prove themselves. Both are based on the mistaken belief that one’s self-respect relies on how well one performs in comparison with others. Both are afraid of not being valued. Only as this basic and often troublesome fear begins to dissolve can we discover a new meaning in competition.
1.What does this passage mainly talk about?
A. Competition helps to set up self-respect.
B. Opinions about competition are different among people.
C. Competition is harmful to personal quality development.
D. Failures are necessary experiences in competition
2.Why do some people favor competition according to the passage?
A. It pushes society forward.
B. It builds up a sense of duty.
C. It improves personal abilities.
D. It encourages individual efforts.
3.What is the similar belief of the true competitors and those with a desire to fail ?
A. One’s worth lies in his performance compared with others.
B. One’s success in competition needs great efforts.
C. One’s achievement is determined by his particular skills.
D. One’s success is based on how hard he has tried.
4.Which point of view may the author agree to?
A. Every effort should be paid back.
B. Competition should be encouraged.
C. Winning should be a life-and-death matter.
D. Fear of failure should be removed in competition.
查看答案和解析>>
科目:高中英語 來源:2016屆重慶市高一下學期期末考試英語試卷(解析版) 題型:其他題
課文填空(共5小題:每小題1分,滿分5分)
Mao Zedong wrote a poem in which he dreamed of “walls of stone to 1. back clouds and rain till a2. lake rises in the 3. gorges”. Now his dream has come 4.. The power of the Yangtze River, which is the world’s third 5.river, has been harnessed by the Three Gorges Dam.
查看答案和解析>>
科目:高中英語 來源:2016屆陜西西安市高一下學期期末考試英語試卷(解析版) 題型:信息匹配
A.Means of e?waste recycling B.How e?waste comes into being C.The benefit of e?waste recycling D.The technologies of e?waste recycling E.The importance of the electronic waste recycle F.Modern technology brings convenience and e?waste |
1.
Modern technology does bring us many conveniences(便利),from Wi?Fi(無線網絡)enabled cell phones and ever? smaller laptop computers that make entire lives easy to energy? efficient washers that use half the power and time to complete their tasks. However,these new toys and equipment finally become electronic waste ( 電子垃圾)(e? waste)once they are out of use.
2.
E? waste includes everything from empty printer ink containers to broken refrigerators. As people buy new items to replace aging electronics or make upgrades(升級),more electronic waste comes into being. In some cases,such as 2009's switch from analog(模擬)to digital television broadcasting in the United States,changes in technology are so great that old equipment may not even work at all with new systems.
3.
There are many reasons why it is important to recycle electronic waste. Much of the material used to construct electronics,including metal and plastic parts,can be recycled into new items at a discount of the cost and energy use needed to create things from new raw materials(原材料). Additionally,many electronics contain poisonous substances (有毒物質)that are harmful to the environment and could be deadly if they go into an area's groundwater. When properly recycled,they can be reused and will not do harm to the environment. Because of these environmental concerns,many areas require by law that electronic waste be properly recycled.
4.
The availability(可用性)of e?waste recycling programs varies from place to place. In some areas,annual collections are held once or twice a year as a means of dealing with e?waste as well as used engine oil or other waste that is harmful to the environment. There are also some good alternatives (替代品) to recycling your e?waste. Any items that are in working condition can be given to friends or donated to charities(慈善機構)like Goodwill or the Salvation Army,who rely heavily on donations ( 捐贈) . Freecycling ,or passing on your unwanted items to those in need of them,is also a means of finding new homes for used items.
5.
E?waste recycling helps protect the environment by reducing the amount of poisonous materials placed in landfills(垃圾場)and saving recyclable parts to save energy and other resources. Recycling is a way of life. Stick to that choice every single day and recycling will become second nature to us.
查看答案和解析>>
湖北省互聯(lián)網違法和不良信息舉報平臺 | 網上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權舉報專區(qū)
違法和不良信息舉報電話:027-86699610 舉報郵箱:58377363@163.com