According to scientists, our mental abilities begin to _____ from the age of 27 after reaching the highest level at 22.

A.differB.shrinkC.failD.decline

練習冊系列答案
相關(guān)習題

科目:高中英語 來源:2014-2015學年陜西西安曲江第一中學高三上學期期中考試英語試卷(解析版) 題型:單項填空

He asked ______ for the violin.

A. did I pay how much B. I paid how much

C. how much did I pay D. how much I paid

查看答案和解析>>

科目:高中英語 來源:2016屆吉林大學附中高三上學期第四次摸底考英語試卷(解析版) 題型:七選五

根據(jù)短文內(nèi)容,從短文后的選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。

How to Survive Exam Stress

Exam time is one of the most stressful in school, whether it is high school, college or graduate school. Even the best students feel the pressure. The first sign of a problem while preparing for an exam is worry. 1. If we can get rid of worries, or at least control them, then we’re in a much better position to do well on our tests. Take the following steps to survive exam stress and increase your overall performance as a result.

2. What causes you anxiety when you are studying? Too much noise? Then move to a quieter place. Delayed work? Catch up with your studies a couple nights before. That way you can save the final night before the exam to review and get a good night of sleep.

The second way to deal with worry is to replace thoughts. Suppose you wake up at three in the morning and you’re worried about an exam. What do you do? 3. Doing something productive might allow you to sleep better when you finally do go back to bed.

Another way to replace negative thoughts is to do something physically active. Work out. Take a quick walk or a nice run. 4. For example, I might worry about the exam having surprise questions that I’m not prepared to answer. But I can put those thoughts aside by reminding myself that I’ve taken many exams and I’ve handled surprise questions before.

The third option is to treat the symptoms. Keep things in perspective. Think of one final exam that causes you the most anxiety. Now think of the worst thing that could happen. If you’ve prepared, then likely the worst grade you could get is a C. And, if you’ve been applying what we’ve been talking about, then you’ll likely do no worse than a B. 5.

A. How bad is that really?

B. The first is to delete the causes.

C. Another idea is to think positive thoughts.

D. Worry robs us of energy, focus and motivation.

E. How about getting up and studying for an hour?

F. What we should do is to think positively and get rid of it.

G. So we are supposed to make our effort to improve our surroundings.

查看答案和解析>>

科目:高中英語 來源:2015-2016學年黑龍江大慶實驗中學高二上期末英語試卷(解析版) 題型:單項填空

The number of people present at the meeting ______ about one thousand, a large number of whom ______ experts from abroad.

A. was; was B. was; were

C. were; were D. were; was

查看答案和解析>>

科目:高中英語 來源:2016屆浙江臨海臺州中學高三上學期第三次統(tǒng)練英語試卷(解析版) 題型:短文改錯

短文改錯

假定英語課上老師要求同桌之間交換修改作文,請你修改你同桌寫的以下作文。文中共有10處語言錯誤,要求你在錯誤的地方增加、刪除或修改某個單詞。

增加:在缺詞處加一個漏字符號(∧),并在其下面寫上該加的詞。

刪除:把多余的詞用斜線(﹨)劃掉。

修改:在錯的詞下劃一橫線,并在該詞下面寫上修改后的詞。

注意:1. 每處錯誤及其修改均僅限一詞;

2. 只允許修改10處,多者(從十一處起)不計分。

Dear Smith,

I have a good news for you. All senior three students will take part in a mountain- climbing activity in May 18th, which is intending to help reduce our pressure from study. So I’m writing to invite you to go along.

We plan to gather at the school gate at 8:20, weather permitting. Then they will set off at 8:30, heading for the mountains nearby on feet. After having a good time, we are supposed to go back school for lunch at about 12.

The suggestions are as following. You’d better wear strong and comfortably shoes so that you can enjoy the trip. A bottle of water and some snacks were also necessary in climbing. In addition, you can take with you a camera to get some photos taken.

Look forward to your reply.

Yours,

Li Yan

查看答案和解析>>

科目:高中英語 來源:2016屆江西南昌二中高三上學期第四次考試英語試卷(解析版) 題型:閱讀理解

It is widely known that any English conversation begins with The Weather. Such a fixation with the weather finds expression in Dr.Johnson’s famous comment that “When two English meet, their first talk is of weather.” Though Johnson’s observation is as accurate now as it was over two hundred years ago, most commentators fail to come up with a convincing explanation for this English weather-speak.

Bill Bryson, for example, concludes that, as the English weather is not at all exciting, the obsession with it can hardly be understood. He argues that “To an outsider, the most striking thing about the English weather is that there is not very much of it.” Simply, the reason is that the unusual and unpredictable weather is almost unknown in the British Isles.

Jeremy Paxman, however, disagrees with Bryson, arguing that the English weather is by nature attractive. Bryson is wrong, he says, because the English preference for the weather has nothing to do with the natural phenomena.” The interest is less in the phenomena themselves, but in uncertainty.” According to him, the weather in England is very changeable and uncertain and it attracts the English as well as the outsider.

Bryson and Paxman stand for common misconceptions about the weather-speak among the English. Both commentators, somehow, are missing the point. The English weather conversation is not really about the weather at all. English weather-speak is a system of signs, which is developed to help the speakers overcome the natural reserve and actually talk to each other. Everyone knows conversations starting with weather-speak are not requests for weather data. Rather, they are routine greetings, conversation starters or the blank “fillers”, In other words, English weather-speak is a means of social bonding.

1.The author mentions Dr.Johnson’s comment to show that________.

A. most commentators agree with Dr.Johnson

B. Dr.Johnson is famous for his weather observation

C. the comment was accurate two hundred years ago

D. English conversations usually start with the weather

2.What does the underlined word “obsession” most probably refer to?

A. An emotional state

B. An unknown phenomenon.

C. A historical concept.

D. A social trend.

3.According to the passage, Jeremy Paxman believes that________.

A. Bill Bryson has little knowledge of the weather

B. English people talk about the weather for its uncertainty

C. the English weather attracts people to the British Isles

D. there is nothing special about the English weather

4.What is the author’s main purpose of writing the passage?

A. To convince people that the English weather is changeable.

B. To analyze misconceptions about the English weather.

C. To find fault with both Bill Bryson and Jeremy Paxman.

D. To explain what English weather-speak is about.

查看答案和解析>>

科目:高中英語 來源:2015-2016學年江西南昌二中高二上第三次月考英語試卷(解析版) 題型:閱讀理解

The bed should be reserved as a place for sleep, but people tend to read an iPad a lot in bed before they go to sleep.

Charles Czeisler, a professor at Harvard Medical School, and his colleagues got a small group of people for an experiment. For five days in a row, the subjects (實驗對象) read either a paper book or an iPad for four hours before sleep. Their sleep patterns were monitored all night. Before and after each trial period, they took hourly blood tests to paint a day-long picture of just how much melatonin (褪黑激素) was in their blood at any given time.

When the subjects read on the iPad as compared to the paper books, they reported feeling less sleepy at night and less active the following morning. They also took longer to fall asleep on the iPad nights, and the blood tests showed that their melatonin secretion (分泌) was delayed by an hour and a half.

The researchers conclude in today's journal article that given (考慮到)the rise of e-readers and the increasingly widespread use of e-things among children and adolescents, more research into the long-term consequences of these devices on health and safety is urgently needed. Czeisler and colleagues go on, in the research paper, to note:“Reading an iPad in bed may increase cancer risk.”

However, software has been developed that can reduce some of the blue light from the screens of phones and computers according to time of day, and there are also glasses that are made to filter (過濾) short wavelengths. While they seem like a logical solution for the nighttime tech users, it needs more research.

1.In Charles Czeislers experiment, all the subjects were asked to______.

A. sit in a row and receive the strict tests

B. have their blood tested per hour during the trial

C. read a paper book and an iPad at the same time

D. have their sleep patterns observed all night

2.The third paragraph tells us the iPad readers were likely to______.

A. feel less sleepy and tired in the day

B. become less energetic the next morning

C. have a lot more melatonin secretion

D. fall asleep more easily after reading

3.The special software recently developed can______.

A. weaken the harm done by doing nighttime e-reading

B. help prevent eyes being harmed by short wavelength

C. remove the blue light from your devices completely

D. be used in all the e-things widely and safely

4.Which title is the best one for the text?

A. Wrong behaviors before bedtime

B. New software for night e-readers

C. No e-reading in bed before sleep

D. No games on iPad in bed

查看答案和解析>>

科目:高中英語 來源:2015-2016學年黑龍江齊齊哈爾實驗中學高一上期中英語卷(解析版) 題型:閱讀理解

If Confucius(孔子) were alive today and could celebrate his September 28 birthday with a big cake, there would be a lot of candles. He’d need a fan or a strong wind to help him put them out.

While many people in China remember Confucius on his special day, few people in the United States will give him a passing thought. It’s nothing personal. Most Americans don’t even remember the birthdays of their own national heroes.

But that doesn’t mean that Americans don’t care about Confucius. In many ways he has become a bridge that foreigners must cross if they want to reach a deeper understanding of China.

In the past two decades, the Chinese studies programs have gained huge popularity in Western universities. More recently, the Chinese government has set up Confucius Institutes in more than 80 countries. These schools teach both Chinese language and culture. The main courses of Chinese culture usually include Chinese art, history and philosophy(哲學). Some social scientists suggest that Westerners should take advantage of the ancient Chinese wisdom to make up the drawbacks of Western philosophy. Students in the United States, at the same time, are racing to learn Chinese. So they will be ready for life in a world where China is an equal power with the United States. Businessmen who hope to make money in China are reading books about Confucius to understand their Chinese customers.

So the old thinker’s ideas are still alive and well.

Today China attracts the West more than ever, and it will need more to introduce Confucius and Chinese culture to the West.

As for the old thinker, he will not be forgotten by people in the West, even if his birthday is.

1.The opening paragraph is mainly intended to _______.

A. attract the readers’ interest in the subject

B. provide some key facts about Confucius

C. show great respect for the ancient thinker

D. prove the popularity of modern birthday celebrations

2.We can learn from Paragraph 4 that American students _______.

A. take an active part in Chinese competitions

B. try to get high scores in Chinese exams

C. fight for a chance to learn Chinese

D. have a great passion in studying Chinese

3.What is the best title for this passage?

A. Forgotten Wisdom in America.

B. Huge Fans of the Chinese Language.

C. Old Thinker with a Big Future.

D. Chinese Culture for Westerners.

4.The passage is likely to appear in ______.

A.a biography B. a history paper

C. a newspaper D. a philosophy textbook

查看答案和解析>>

科目:高中英語 來源:2016屆山東滕州第一中學高三12月階段檢測英語試卷(解析版) 題型:閱讀理解

People are being tricked into Facebook with the promise of a fun, free service without realizing they’re paying for it by giving up loads of personal information.

Most Facebook users don’t realize this is happening. Even if they know what the company is up to, they still have no idea what they’re paying for Facebook because people don’t really know what their personal data is worth.

The biggest problem, however, is that the company keeps changing the rules . That was the great thing about Facebook. You could create your own little private network. Last year, the company changed its privacy rules so that many things: your city, your photo, your friends’ names ,were set by default (默認)to be shared with everyone on the Internet.

According to Facebook’s vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “l(fā)ess satisfying experience”.

Some critics think this is more about Facebook looking to make more money. In original business model, which involved selling ads and putting them. At the side of the pages totally, who wants to look at ads when they’re online connecting with their friends?

The privacy issue has already landed Facebook in hot water in Washington. In April, Senator Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set guidelines for social networking sites. “I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits.

I suspect that whatever Facebook has done so far to invade our privacy, it’s only the beginning, which is why I’m considering canceling my account. Facebook is a handy site, but I’m upset by the idea that my information is in the hands of people I don’t know. That’s too high a price to pay.

1. What do we learn about Facebook from the first paragraph?

A. It provides loads of information to its users.

B. It earns money by putting on advertisements.

C. It is a website that sends messages to users who want to get married.

D. It makes money by selling its users’ personal data.

2. What does the author say about most Facebook users?

A. They don’t know their personal data enriches Facebook.

B. They are unwilling to give up their personal information.

C. They don’t identify themselves when using the website.

D. They care very little about their personal information.

3.Why does Facebook make changes to its rules according to Elliot Schrage?

A. To obey the Federal guidelines.

B. To expand its business.

C. To improve its users’ connection

D. To provide better service to its users

4. Why does the author plan to cancel his Facebook account?

A. He is dissatisfied with its present service.

B. He finds many of its users untrustworthy.

C. He doesn’t want his personal data badly used.

D. He is upset by its frequent rule changes.

查看答案和解析>>

同步練習冊答案