Caffeine not only gives us a daily jump start, but new research suggests it also can strengthen long-term memory.

According to the US Food and Drug Administration, nearly 90 percent of people worldwide consume about 200 milligrams of caffeine each day. That' s equivalent to about one strong cup of coffee a day. Writing in " Nature Neuroscience" , Johns Hopkins University researchers say their findings show that caffeine strengthens certain memories for up to 24 hours after being taken in.

" We've always known that caffeine has cognitive-enhancing effects (促智效果) , but its particular effects on strengthening memories and making them resistant to forgetting has never been examined in detail in humans, " said senior author of the paper Michael Yassa. " We re- port for the first time a specific effect of caffeine on reducing forgetting over 24 hours. " Conducting a double-blind trial, the researchers worked with a test group of people who didn't regularly consume caffeinated products. Five minutes after studying a series of images, the test subjects were given either a placebo(無(wú)效對(duì)照劑) or a 200-milligram caffeine tablet.

To check the caffeine levels of their test subjects, the research team took saliva samples (唾液樣品) from them before they took their tablets and again one, three and 24 hours afterwards.

Both groups of test participants ( those who took the placebo and those who took the caffeine tablet) were tested the following day to see if they could recognize the images they' d seen the previous day.

The test included showing the test subjects another series of images that included some new images , those that were shown the previous day, as well as other images that were similar, but not the same as those they had viewed earlier.

The researchers found that more members of the group who were given the caffeine tablets were able to correctly identify some of the new images as " similar" to previously viewed images rather than incorrectly identifying them as the same.

"We also know that caffeine is associated with health and longevity(長(zhǎng)壽) and may have some protective effects from cognitive decline like Alzheimer' s disease (阿爾茨海默癥). " said Yassa.

1.The purpose of the new research is ____________.

A.to examine caffeine ' s memory-strengthening effects in detail

B.to write the paper " Nature Neuroscience"

C.to prove caffeine has cognitive-enhancing effects

D.to survey how much caffeine people consume a day

2. During the research , the researchers did the following things EXCEPT ________.

A.giving the test subjects placebos or caffeine tablets

B.checking the caffeine levels of the test subjects

C.showing the test subjects series of images

D.encouraging the test subjects to drink more coffee

3. How did the test subjects show the caffeine ' s memory-strengthening effects?

A.By taking the caffeine tablets instead of placebos.

B.By recognizing images they ' d seen the previous day.

C.By identifying the new images as the same.

D.By telling the differences between new images.

4.What will the next part of the text possibly talk about?

A.Ways to achieve health and longevity.

B.The harmful effects of cognitive decline.

C.The treatment for Alzheimer' s disease.

D.The effects caffeine has on health.

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科目:高中英語(yǔ) 來(lái)源:2014-2015學(xué)年遼寧師大附中高三上期中英語(yǔ)試卷(解析版) 題型:其他題

第三部分:詞組:(共20小題;每小題1.5分,滿分30分)

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4.適用于……,合乎……的事實(shí)

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6.以……的速度

7.擺脫; 離開(kāi)

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科目:高中英語(yǔ) 來(lái)源:2015-2016學(xué)年湖南兩校高二上學(xué)期期中聯(lián)考英語(yǔ)試卷(解析版) 題型:其他題

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Planning a September trip to France

September is one of the very best months to visit France.Not only will you enjoy plenty of sunshine and warm weather, but the tourist season is beginning to wind down-which means cheaper airfares, lower prices at hotels, and fewer crowds.1.

●Go wine tasting

2. And there are plenty of wine-related events and festivals around the country.So September is a great time to visit the vineyards around the country and go wine tasting.The Bordeaux, Loire and Burgundy regions are all lovely and great places to visit vineyards.Besides that, going to the castles of the Loire region in between visiting vineyards on such warm and Sunny days is also very enjoyable.

3.

The temperatures are slightly lower,but plenty of sunshine makes for perfect conditions to enjoy a barge cruise on the canals of France.With such comfortable weather and beautiful scenery at this time of year, nothing equals hanging out on the deck of a barge.

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Besides the above,riding a bike through France’s villages is also a welcome activity for young visitors in September.You call shop for the most fashionable clothes or goods here.You can see the beautiful and fantastic scenery along the road. 5.

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B.Enjoy the music concerts.

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D.France is a beautiful country.

E.September is the beginning of the grape harvest season in France.

F.Going out of the Louvre, you can walk to the modern and fashionable Champs Elysees to do some shopping.

G.If this is your first trip to France, here is some handy information to help you get started planning your vacation!

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When I was growing up my dad would often give me small tasks to finish to help out around the house. Some were easy but the three I remember the most were the three of all. The first was helping to weed the four we had. It was work. I would rather ride my bike than crawl(爬行)in the dirt on my hands and knees the thousands of weeds in our gardens. The second was piling firewood for . It was tough work and I got more than my of pieces. I would rather walk in the woods than piling it in rows. The third was water from a mountain spring to our house. our well water had too much iron in it to .

Over the years, though, I learned to see the in all the things my dad had made me do. Having fresh vegetables for dinner was a delight. a cold glass of iced ten made from the mountain spring water was a pure . Standing by the wood stove on a snowy December day was a wonderful way to . I saw as well that all this work my dad had given me had

made me a better, stronger and more caring man. Most of all, I that when I did my work with a(n) heart, it didn’t fell like work at all.

Over the years I have learned something else too. When we do the work for our Heavenly Father with a spirit, it doesn’t feel like work, either. It feels like. Every act of kindness, word of encouragement, and gift of love we share will only make our lives better, make our hearts happier, and bring out souls to Heaven.

I am so to both my dad and my Father in Heaven. They showed me the of work and more importantly they showed me the pricelessness of love.

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2.A. schools B. companies C. gardens D. streets

3.A. boring B. exciting C. interesting D. relaxing

4.A. controlling B. keeping C. pushing D. pulling

5.A. festival B. winter C. holiday D. marriage

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8.A. because B. unless C. although D. but

9.A. boil B. match C. get D. drink

10.A. requirements B. attention C. rewards D. experience

11.A. Designing B. Enjoying C. Performing D. Developing

12.A. desire B. challenge C. surprise D. pleasure

13.A. turn up B. warm up C. stay up D. set up

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15.A. remembered B. ignored C. regretted D. realized

16.A. honest B. happy C. brave D. modest

17.A. loving B. complaining C. hating D. punishing

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19.A. kind B. lucky C. grateful D. vital

20.A. key B. way C. goal D. value

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---Don’t worry, Jim. I can lend you the money.

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Five years ago, David Smith wore an expensive suit to work every day. “I was a clothes addict,” he jokes. “I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled.” Today David wears casual clothes-khaki pants and sports shirt to the office. He hardly ever wears a necktie. “I’m working harder than ever,” David says, “and I need to feel comfortable.”

More and more companies are allowing their office workers to wear casual clothes to work in the United States. The change from formal to casual office wear has been gradual. In the early 1990s, many companies allowed their employees to wear casual clothes on Friday(but only on Friday). This became known as “dress-down Friday” or “casual Friday”. “What started out as an extra one-day-a-week benefit for employees has really become an everyday thing.” said business consultant Maisly Jones.

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4.In this passage, the following advantages of casual office wear are mentioned in the passage except _______.

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B. the man got his umbrella back

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B. how to make an effective advertisement

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短文改錯(cuò)

假定英語(yǔ)課上老師要求同桌之間交換修改作文,請(qǐng)你修改你同桌寫(xiě)的以下作文。文中共有10處語(yǔ)言錯(cuò)誤,每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。

增加:在缺詞處加一個(gè)漏字符號(hào)(∧),并在其下面寫(xiě)出該加的詞。

刪除:把多余的詞用斜線(\)劃掉。

修改:在錯(cuò)的詞下劃一橫線,并在該詞下面寫(xiě)出修改后的詞。

注意:1. 每處錯(cuò)誤及其修改均僅限一詞;

2. 只允許修改10處,多者(從第11處起)不計(jì)分。

On a snowy winter night, a bus with 45 passenger had an accident because the wet road. And all of them were trapping in the bus and what is worse, the bus ran out of gas and it was very cold in it. They could do nothing but to wait for help. A man who lived nearby saw that had happened. He and some villagers succeeded in open the door and helped all of them out of the bus. He took them to his home but offered food and water and even some warm clothes to the children. They spent two days in their home and finally help came. All of them were thankfully for their help.

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短文改錯(cuò)

假定英語(yǔ)課上老師要求同桌之間交換修改作文,請(qǐng)你修改你同桌寫(xiě)的以下作文。文中共有10處語(yǔ)言錯(cuò)誤,每句中最多有兩處。每處錯(cuò)誤僅涉及一個(gè)單詞的增加、刪除或修改。

增加:在缺詞處加一個(gè)漏字符號(hào)(),并在其下面寫(xiě)出該加的詞。

刪除:把多余的詞用斜線(\)劃掉。

修改:在錯(cuò)的詞下劃一橫線,并在該詞下面寫(xiě)出修改后的詞。

注意:1. 每處錯(cuò)誤及其修改均僅限一詞;

2. 只允許修改10處,多者(從第11處起)不計(jì)分。

Today, my foreign teacher Tim and I went to the People’s park together. We take a taxi and it wasn’t long before we arrived at the park. On seeing the green trees and beautiful flower, Tim couldn’t wait for to take pictures. It was at that moment when we found his camera was missing. He was very worried but searched all over his backpack. Sadly, he just couldn’t find it. Suddenly it struck me that he might have left it in the taxi. So I immediately got touch with the taxi company. About half an hour later, the driver returned a camera. Both of us were gratefully to the driver, and Tim, in particular, insisted on have a photo taken with him. Tim and I enjoyed themselves during the rest of the day.

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