D

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           Most of us are aware that taking breaks from physical activity is necessary to recover and prevent injuries. Taking breaks in our mental work is equally helpful.

           Recent studies show that those who give in to some kind of distraction once an hour perform better than those who just keep at it without a break. After a while,our brains can't focus so well,and we become unable to continuously treat the task as important. Taking a break allows us to come back to the job at hand with renewed energy and a sense of purpose.

           No matter how much we love our work,we cannot keep creating when we are on empty. Something as simple as a ten-minute conversation with a friend,or watching an inspiring video can give us much needed help,or point us in a new direction if we* re stuck. It is difficult to see things from a new point of view when we come at it the same way all the time. Taking a step away might be just what we need to (恢复精力) .

           We are not designed to sit around all day. As difficult as being sedentary(需要久坐的) is on our bodies,it's not helpful for our creativity and productivity,either. Getting up for a few minutes and getting our blood flowing and some more oxygen to the brain are a necessary piece of the v^ork day.

          If you know you typically have an afternoon energy slump(锐减), consider doing exercise during the lunch-time hours. Studies have shown that appropriate activity can boost creativity and productivity for two hours afterward. Plus,the change of scene and focus may just be something you need for your next breakthrough at work.

           The next time you feel guilty about taking a break, consider how much more effective it may make you in the long run.

13. According to Paragraph 2 ,recent studies show.

   A. our brains react negatively to distractions

   B. people are always working without a break

   C. taking breaks from work benefits productivity

   D. taking breaks from physical activity can prevent injuries

14. In the author's opinion,a sedentary lifestyle .

   A. is necessary sometimes

   B. means good productivity at times

   C. cannot be avoided by today's people

   D. is harmftil both physically and mentally

15. The text is meant to show the importance of.

   A. creativity at work

   B. treating work seriously

   C. taking breaks at work

   D. high productivity at work

16. Where does the text probably come from?

   A. A book review.

   B. A research plan.

   C. A science report.

   D. A business report.

                                 B 

        The daily hard work in the office can be extremely exhausting. Staring at a computer screen for eight hours a day seems like modem business practice. It's also a common belief that you 5 re more likely to complete your "tasks if you keep your bottom planted in your chair all day. But that opinion is erroneous. In fact,taking breaks regularly throughout your workday can increase your productivity and creativity as it helps to keep the mental iuices flowing. ,

         A new study in the journal Cognition overturns an old theory about the nature of attention and shows that brief breaks from a task can greatly improve one's  ability to focus on that task for a longer period of time. The study gets to the most important part of what so many of us experience when doing the same task for a long period of time; after a while you begin to lose your focus and your ability to perform the task well. "Basically,if you don 51 take small breaks during the day,you re likely to suffer from exhaustion and won 51 complete your task to the highest level of your ability,” says Alejandro Lleras,the leader of the study.

         In addition,new research shows that your brain can be trained and developed iike a muscle. Mental concentration is part of that training. Just as your muscles  become tired after a workout,so does your brain. It needs a rest to recover and move on.

         So,what can you do if you feel guilty about taking a break during the workday? Remember that taking breaks is a good,necessary thing. We* re trying to prove ourselves and our worth to the company,which makes us think that taking breaks prevents us from achieving our goals,but in fact it's  not. It's  necessary to do your best work. 

5. What does the underlined word a “erroneous” in Paragraph 1 mean?

   A. Incorrect.    B. Interesting.

   C. Important.    D. Strange.

6. The study by Alejandro Lleras shows that people.

   A. always lose their focus during the workday

   B. find it hard to reach the highest level of their ability

   C. often feel competitive when performing a task well

   D. become less productive after working non-stop for long periods

7. The third paragraph is mainly developed .

   A. by order in space    B. by cause and effect

   C. by time and events   D. by making a comparison

8. In the author's opinion,people should .

   A. take breaks at work

   B. try to achieve their goals

   C. train their brains frequently

   D. prove themselves to the company

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