Never did we have to play "stand up", "sit do...

Never did we have to play "stand up", "sit down", "speak out". I don't ____ one student who didn’t try his best.

高三英语单项填空简单题查看答案及解析

If you are sitting down listening to what I’m going to say, stand up. Move your legs. Touch your toes, if you can. Do anything but sit.

If you cut down on the time you spend sitting, you might live longer. New research shows that sitting less than three hours a day might extend your life by two years.

Just the opposite, says Peter Katzmarzyk. He is a scientist at the University of Louisiana in the southern United States. He says that sitting is ubiquitous in our lives. "We sit while we're eating; we sit in the car; we sit while we watch TV. Many of us sit for many hours at work. " But, he adds, that does not make sitting good for us. The human body is designed to move. But modern lifestyles and office jobs rarely give us the chance to move around.

Exercise is important. So is not sitting.

"We can't throw away physical activity. It's extremely important. We have 60 years of research showing us that. Even if you exercise for 30 minutes a day, what goes on in the other 23-and-a-half hours a day is also very important."

Mr. Katzmarzyk and his co-workers are part of a new generation of researchers studying how sitting all day affects length of life. This is a relatively new area of study—studies that have assessed the relationship between sitting and mortality(死亡) or television viewing and mortality.

Making uses of the few studies available to them, they found that cutting television time to less than two hours a day could add one-point four years to life.

New desk designs are helping

Change is already coming to some offices, especially in the design of desks. A "standing desk" lets people stand while they work. Another new design is called the "treadmill desk." A treadmill is an exercise machine that lets you walk in one place. That's one of the strategies that many companies are using now. Some companies may equip their employees with a "standing desk" or a "treadmill desk". Other companies may not buy one for everybody, but they'll have a bank of these desks where people can go for an hour a day and answer their emails or talk on the phone. Even some U.S. schools are beginning to experiment with such desks to keep children moving.

Mr. Katzmarzyk says studying this problem has inspired his team to make a few changes in their own lives. "As a university professor, you know, it is a very sedentary occupation. We're chained to a desk in terms of writing papers and doing research. We really try to limit the amount of time we spend doing that."

Suggestions for sitting less

If you work in office job or have a sedentary job, Mr. Katzmarzyk and his team suggest a few simple changes:

get up from your desk as often as you can take walks at lunch time walk to your colleagues’ offices and talk directly instead of emailing them All these activities may help you live longer.

1.What might be the best title for the passage?

A. Take exercise, keep fit.

B. Change more, achieve greater.

C. Talk directly, improve relationship.

D. Sit less, live longer.

2.The word “ubiquitous ” (in Para. 3) means “_______”.

A. common　　　　 B. normal

C. individual　 D. specific

3. Mr Katzmarzyk holds the view that _______.

A. the study doesn’t benefit him at all

B. it’s unnecessary to limit television time

C. emailing colleagues is better than a face-to-face talk

D. those taking exercises 30 minutes a day still can’t sit long

4. The passage is most likely to be _______.

A. a medical research　　　　　 B. a book review

C. a health report　　　　　　　 D. a sports feature

高三英语阅读理解中等难度题查看答案及解析

We have to __________finding a solution.

高三英语单项填空中等难度题查看答案及解析

Many students have trouble sitting quietly. They play with pencils, talk out of turn, and jump to do things before thinking. Others can sit still but find it hard to focus on classwork. They may daydream, struggle to organize their work and forget to do assignments.

Most people feel restless or unglued from time to time, but some feel this way almost all the time. Nearly one out of ten kids have ADHD ( Attention-Deficit /Hyperactivity Disorder ). But ADHD does not have to be a roadblock to achievement. Here, two professionals in their fields share the secrets of their success.

Astronaut Scott Kelly has flown on four space tasks, including one that lasted close to a year. But when he was growing up, he had trouble focusing in school. As a result, he earned low grades. I read a novel in college about the space program. The book motivated me to study harder and become a much better student and eventually, an astronaut. The lesson I learned was: Don’t give up on yourself. Find something or someone that motivates you and use that to help motivate yourself.

Figure skater Zachary Donohue placed fourth for ice dancing at the 2018 Winter Olympics. In elementary school, Zachary had a hard time making friends because his classmates thought lie was wild, overly excitable and lacking orderly continuity. “A lot of very successful people have ADHD, so wear it with pride. When I was 16, I realized that it was OK for me to be different than others. Now, at 27, I’m learning to understand my own feelings. I still struggle with ADHD, but I’ve learned that I’m responsible for more than just myself. I’ve learned how important it is to be organized and to be a step ahead. “

1.The author may agree that___________ .

A.failure is the mother of success B.nothing can stand in the way of success

C.the secrets of success should be shared D.people with ADHD are more likely to succeed

2.What contributes to Scott Kelly's success?

A.Living with ADHD. B.The lessons on astronomy.

C.His great interest in space. D.The motivation from his grades.

3.What does Zachary Donohue do with ADHD?

A.He faces it responsibly. B.He views it differently.

C.He takes advantage of it. D.He sees it as a disadvantage.

4.How is the passage mainly developed?

A.By examples. B.By comparison.

C.By explanation. D.By classification.

高三英语阅读理解中等难度题查看答案及解析

Nine out of 10 people have run up unsecured debt and many fear they will never be able to pay back what they owe, a survey has claimed.

Around 89% of people aged between l|8 and 35 said they owed money on a credit card, loan or overdraft, the research showed．

A third of people admitted they did not think- they would ever be debt-free, 54% of whom said they would always need to borrow money in order to fund the lifestyle they wanted．

One in five of these people also claimed they were not worried about the possibility of their debts being passed on to their next of kin if they died before they were repaid．

Just over half who owed money said they did not feel in control of their debt, with 8% admitting they had needed to ask for help with repayments from a friend or family member．Eight out of 10 people also told the research for discount website MyVoucherCodes．co．uk that they thought it was too easy to borrow money through their bank or on credit cards．

Farhad Farhadi, MyVoucherCodes．co．uk’s personal finance expert, said: "The majority of British adults owe money m some way, shape or form, but to see that almost a third think they'll never be free c ^ from debt is quite alarming．

"When borrowing money from any source, how you are going to repay it should always be in the back of your mind．

"A lot of people don't-really think about 'die consequences of borrowing money and it can be easy to get complacent, but keeping it all under control should be a priority from the off．Only borrow what you really think you can afford to pay back．"

1.The best title for this passage is_________．

A．I'll die in debt, say one in three       B．Desperate British

C．The beginning of the end             D．Borrowing money from any source

2.Which of the following is NOT true?

A．Most British adults are in debt in some v/ay．

B．It is hard for the British to borrow money through their bank．

C．Lots of people do not take repaying money seriously．

D．This passage is a warning for the British．

3.What does the underlined phrase mean?

A．end with                   B．from the start

C．ever since               D．fore ever

4.What does Farhad mean by saying "the majority of British adults owe money in some way, shape or form"?

A．It is natural to owe money m Britain so there in no need to worry．

B．It is natural to owe money in Britain as long as you are in control．

C．It does not matter to owe money in Britain if you are rich enough．

D．It seems that the British enjoy owing money in some way．

高三英语阅读理解中等难度题查看答案及解析

We all have our own tricks to cheer up when we’re feeling down; these little tricks can make you feel a little bit happier every day. While there are certainly happy memories tied up in the wedding ring you and your spouse (配偶) purchased together years ago or your teddy bear from childhood, new research finds that we typically feel calmer and experience a greater sense of well-being when we focus on a place that reminds us of happier times rather than a thing, even if it holds great value.

The report, called Places That Make Us, was conducted by National Trust’s and Surrey University’s researchers. Experts performed functional magnetic resonance imaging (MRI) (磁共振成像) scans on 20 volunteers and conducted an online survey of 2,000 people to better understand this deep draw toward special places.

“Working with leading researchers and academics, and using cutting-edge MRI brain technology, we examined how places affect people, how they become special, and why we feel a pull towards them,” explained Nino Strachey, head of research for the National Trust.

The 20 volunteers were shown images of landscapes, houses, and other locations, as well as personally meaningful objects. Measuring their brain activity, the researchers found that it was the places, as opposed to the objects, that caused the brain to get the most excited.

Volunteers were also interviewed at great length two times, once at home and the other time at their special place. The research made discoveries that had never known before — the favorite places awoke feelings of belonging, physical and emotional safety, and an intense internal pull to the place.

Dr. Andy Myers weighed in on the research, saying, “For the first time we have been able to prove the physical and emotional benefits of places, far beyond any research that has been done before.”

1.How was the research conducted?

A. By performing MRI on 2,000 volunteers.

B. By measuring the participants, brain by MRI.

C. By doing rough interviews with the participants.

D. By showing meaningful objects to the participants.

2.How would the author feel about the findings of the study?

A. It is pioneering.　　 B. It is groundless.

C. It is imperfect.　　 D. It is uncommon.

3.What does the underlined phrase “weighed in on” mean?

A. Think highly of.　　 B. Look down on.

C. Pay attention to.　　 D. Make fun of.

4.What does the text mainly talk about?

A. Everyone has his way to be happy.

B. Valuable places can make people happy.

C. Teddy bears are best memories for children.

D. Meaningful objects lead to greater well-being.

高三英语阅读理解中等难度题查看答案及解析

The lift________yesterday. We'll have to walk up to the eighth floor this evening.

高三英语单项填空简单题查看答案及解析

_______homework did we have to do that we had no time to play basketball.

A. So little             B. Too much            C. Too little               D. So much

高三英语单项填空中等难度题查看答案及解析

As it tuned out to be a small house party, we ____ so formally.

A. needn’t dress up       B. couldn’t have dressed up

C. didn’t need dress up       D. needn’t have dressed up

高三英语单项填空简单题查看答案及解析

If you sit down to play an old-school board game like chess this holiday season, it might be surprising to keep in mind just how bad you'd be against a computer. In fact, computers have shown they're capable of taking humans' lunch money at board games for a while now. Remember Deep Blue versus Gary Kasparov in 1997 or AlphaGo against Lee Sedol, in South Korea, at the game of Go(围棋), in 2016?The computer won.

Now, the same team that created the Go-playing robot is celebrating something more powerful: an artificial intelligence system that is capable of teaching itself and winning at three different games.

They call it AlphaZero, and it knows two kinds of chess and Go. All of these games fall into the kind of “full information” or “perfect information” contests-each player can see the entire board and has access to the same information. That's different from games like poker, for example, where you don't know what cards an opponent is holding.

“AlphaZero needs to be told the rules of the games first, and after that, it learns by competing with itself in the games,” says Julian Schrittwieser."It suggests that we have a good chance to extend this to even more real-world problems that we might want to solve later."

And board games have historically been a good way to test computers' abilities. “It took us decades of work on these games to reach the point where AlphaZero can perform them better than people,” Campbell says. “I think they've served the field very well. They've allowed us to explore techniques such as the ones used in AlphaZero, which will be helpful as the field aims at more complex tasks.” Campbell adds. “And that is the whole point in the first place of solving games-it isn't for their own sake, but for it is a limited kind of environment where we can make progress in many other branches of science and technology.”

1.What's the author's main purpose in mentioning the two games in paragraph 1?

A.To show computers are bad at playing board games,

B.To prove computers can defeat humans at board games.

C.To emphasize humans are capable of playing computer games.

D.To demonstrate people can earn money by playing board games.

2.What is paragraph 3 mainly about?

A.The operating principle of AlphaZero. B.The differences between chess and Go.

C.The information about hi-tech contests. D.The features of the games AlphaZero knows.

3.How can AlphaZero learn in the games?

A.By playing the games against itself. B.By playing multiple online games.

C.By being programmed by humans. D.By setting the rules of the games.

4.What does Campbell say about board games?

A.They help solve computers' problems.

B.They are used to test people's abilities.

C.Their techniques can be applied to other fields.

D.Their technology can be merely limited in games.

高三英语阅读理解中等难度题查看答案及解析