A Concussion(脑震荡) happens when the brain is shaken, often in a car crash or a fall or a strike on; the head in sports.Concussions can be mild, but doctors may order a CT scan to look for a more serious injury.But a recent study warned that more children than necessary are being exposed(使遭受) to radiation this way.
A national team led by two doctors at the University of California, Davis, studied hospital records from thousands of children with head injuries. They found that in many cases, the risk of developing cancer from the radiation outweighed the risk of a serious brain injury.
The study found that one in five children over age two had a low risk of serious injury but received CT scans anyway. The same was true of almost one in four children under two years of age.
The researchers have developed rules to predict if a head injury is serious enough for a scan. For children under two, doctors are advised against it if there is:
·Normal mental activity.
·No swelling in the back of the head.
·No feeling of a broken bone in the skull. (头骨)
·And no loss of consciousness for more than five seconds.
Doctors should also consider how the child was injured and whether the parents say the child is acting normally.
For patients from two to eighteen, the guidelines are similar —— except there should be no l vomiting(呕吐)and no severe headache.
Earlier this year, the British Journal of Sports Medicine published new guidelines for concussions in children and teens. International experts said they should not return to sports or school until fully recovered. The brain also needs a "cognitive rest," they say, by restricting activities like video games, texting and watching TV.
It often take longer than adults to recover from a concussion than adults. The experts say individual progress and not a set time period should always guide a decision to return to play. The researchers at the -University of California found that children who received CT scans
A.were likely to suffer brain injuries |
B.wouldn’t have normal mental activity |
C.would lose consciousness now and then |
D.were likely to develop canter |
How many aspects should doctors consider when deciding whether a child under two needs a CT scan?
A.Four. | B.Six. | C.Seven. | D.Nine. |
What can we learn from the last two paragraphs?
A.Texting is harmful to patients’ recovery from concussions. |
B.Patients with brain injuries can play many sports. |
C.Adults need a longer time than teens to recover from concussions. |
D.It takes at least a year for individuals with brain injuries to fully recover. |
The author of the passage mainly___.
A.describes the risks of brain injuries |
B.suggests CT scans are of practical use |
C.tells us about the risks of brain injury tests |
D.argues against new guidelines for concussions |
Dear Daughter,
As we drove off from Columbia, I wanted to write a letter to you to tell you all that is on my mind.
First, I want to tell you how proud we are.Getting into Columbia is a real testament of what a great well-rounded student you are.It is in college that you will truly discover what learning is about.I encourage you to be curious, but I also want to tell you “Education is what you have left after all that is taught is forgotten”.That is really what learning in college is about–this will be the period where you go from teacher-taught to master-inspired, after which you must become self-learner.So do take each subject seriously, and even if what you learn isn’t critical for your life, the skills of learning will be something you cherish forever.
There is no single simple answer to any question.Remember during your high school debate class, I always asked you to take on the side that you don’t believe in? I did that for a reason– things rarely “black and white”, and there are always many ways to look at a problem.You will become a better problem solver if you recognize that.This is called “critical thinking”, and it is the most important thinking skill you need for your life.This also means you need to become tolerant and supportive of others.I will always remember when I went to my Ph.D.advisor and proposed a new thesis topic.He said “I don’t agree with you, but I’ll support you.”
Do your best in classes, but don’t let pressure get to you.Your mother and I have no expectations for your grades.If you graduate and learn something in your four years, we would feel happy.Please don’t be worried.The only thing that matters is that you learned.The only metric you should use is that you tried.Grades are just silly letters that give the vain people something to brag, and the lazy people something to fear.You are too good to be either.
College is the four years where you have:·the greatest amount of free time.·the first chance to be independent.·the most flexibility to change.·the lowest risk for making mistakes.
So please treasure your college years.
Love,
Dad (& Mom)
(A letter from Kaifu Lee)
1.According to Kaifu Lee, the underlined sentence in the second paragraph means_________.
A.you should learn by yourself instead of learning from your teachers.
B.the knowledge isn’t as important as the ability to learn.
C.the knowledge from college is of less worth than that acquired after college.
D.education is nothing but what you have remembered.
2.Kaifu Lee expects his daughter to _________.
A.agree with those who hold the opposite opinions.
B.find out the difference between ‘right and wrong’.
C.think of more ways to solve a problem critically.
D.step into others’ shoes and think from others’ positions.
3.Based on the letter, it can be inferred that ________.
A.high grades are not important for people.
B.Kaifu Lee and his wife don’t care about their daughter’s grades or college life.
C.Kaifu Lee doesn’t expect her daughter to make any mistakes in her life.
D.Kaifu Lee’s daughter is a freshman in Columbia University.
4.We can conclude that Kaifu Lee’s daughter is _________.
A.dependent and curious B.tolerant and supportive
C.well-rounded and worried D.excellent and hard-working
Making greener choices, from the food you eat to the way you travel, can improve your health.A recent article advises people should try low–carbon (低碳) lifestyles which could be the most important contribution to yourself, even the earth.Some guidelines follow:
1.Use your own power rather than oil whenever you can
Burning oil in your car makes pollution like carbon dioxide (CO2) that causes global warming.Cutting down on driving and using your own twolegs helps cut global warming pollution and helps reduce weight problems over time without dangerous diets or surgery.
If all Americansused foot instead of engine as daily exercise during normal travel, we could reduce our oil dependence by more than a third.Besides, by using a push mower(剪草机) instead of a power mower to cut your lawn, you can also cut up to 80 pounds of CO2 per year! And you’ll get a great workout!
2.Drop the bottled water, drink tap(自来水)
Drinking plenty of water is important during hot weather or when exercising.You may think bringing bottled water with you can be both convenient and harm-free to the environment.But, you may change your mind if you see the truth below in 2006, 30 billion plastic water bottles were made, which used the amount of more than 17 million barrels(桶)of oil–enough to fuel more than one million cars for a year, and produced more than 2.5 million tons of carbon dioxide.
If you have worries about your tap water, clean it regularly!The truth is thattap water is no worse than bottled water ant it saves much money.
3.Choose foods carefully
There are somegeneral ways you can follow that are good for you and the planet:
a.Eating less meat and more grains and vegetables helps reduce the need to cut down forests to grow the food for animals
b.Buying local food may be environmentally–friendly.Locally grown foods often use much less oil in transport than the foods coming from somewhere far away, which would help reduceCO2 amount.
For more information, you may consult http://www.edf.org/
1.What benefit can people make if they walk more but drive less?
A.More pollution will be made during the process.
B.There will be no obvious effect on reducing the amount of carbon dioxide.
C.Every year, more than 30% of the oil can be saved, which will help weaken global warming.
D.People’s weight will stay the same, and they still need to go on a diet to get thinner.
2.Why should we change our preference to bottled water?
A.Bottled water contains more good things for our health.
B.Tap water is not clean enough for people to drink.
C.Bottled water is more expensive than tap water for its better quality.
D.Tap water is as good as bottled water, which wastes so much resource during its production.
3.If you mean to protect the environment, you will ________.
A.often buy food from foreign countries B.seldom eat meat for dinner
C.usually drive to work and home D.never boil tap water to drink
4.Which of the following statements is TRUE?
A.Low–carbon lifestyles bring more harm than benefit to nature.
B.Man’s daily life activities have no effect on the changes of the environment.
C.What you eat can not only be good for your health, but also for the health of the earth.
D.The choice of food is completely personal, which won’t be important for nature at all.
In my experience, one of the greatest reasons of unhappiness is the difficulty we have in accepting things as they are.When we see something we don’t like, we wish it could be different–we cry out for something better.That may be human nature, or perhaps it’s something that has been grown in our culture.
The root of the unhappiness isn’t that we want things to be different, however, it’s that we decided we didn’t like it in the first place.We’ve judged it as bad, rather than saying, “It’s not bad or good, but it just is.”
Here is an example.I have written a paper, A Beautiful Method to Find Peace of Mind.Quite a few people think it bad after reading it because I think people should expect things to go differently than you planned, and that you should accept that, instead of encouraging people to change themselves or the environment as much as possible.You could accept it as the way the world works–as the way things actually are.And try to understand why that is, and follow it, as it is.
This can be useful to whatever you do: whether it be how other people act at work, how politics works and how depressing the news media can be.Accept these things as they are, and try to understand why they’re that way.
It’ll save you a lot of sadness because you’ll no longer say, “Oh, I wish things didn’t go bad!”
If you really understand what I mean, you can try a different way to live in this world:accept, and understand.It might lead to some interesting results.
1.What is the major reason why we feel unhappy in the writer’s opinion?
A.We are never satisfied with ourselves and the environment around us.
B.When we see something that makes us unhappy, we don’t know what to do.
C.We feel hard to accept the way things happen themselves.
D.No matter how happy we are, we never want to be happy.
2.What do you think the writer may say to himself when he meets something unhappy?
A.How could I have made such a stupid mistake?
B.I should have done better.It’s all my fault.
C.Why is it all against my plan? It can’t be so bad.
D.Well, I know all is what it is meant to be.Take it easy.
3.Why do some people think badly of the writer’s new paper after reading it?
A.The writer hasn’t shown an encouraging attitude in his paper.
B.The writer asks people to try to make things better.
C.The writer reminds the people that things will go exactly as you’ve planned.
D.The writer doesn’t think it a good idea to accept the things go naturally.
4.The statements below are based on the writer’s points of view, EXCEPT_______
A.Unhappiness may be caused by human nature that we always want things to be better.
B.Why we don’t like the thing is that we have regard it as bad in the beginning.
C.The news media shouldn’t be so depressing if the reporters worked harder.
D.The best way to avoid feeling unhappy is to accept the things as they are.
三.阅读理解(共20小题;每小题2分,满分40分)
阅读下列短文,从每题所给的四个选项中,选出最佳选项;并在答题卡上将该项涂黑。
In front of 60,000 fans, the former Olympic and world champion, Liu Xiang got his third National Games gold medal in the final of the men’s 110 meters hurdles at the Olympic Sports Center in Ji Nan, Shandong province.
Before winning this game, Liu joined in the Shanghai Golden Grand Prix meet(上海国际田径黄金大奖赛) in September, 2009 and won the second place in men’s 110 meters hurdles with a very slight loss to his solid rival–American athlete, Terrence Trammell.That was the first time that he had shown up on the track and in public after his 13 month’s lay–off.So, this game on October 25, in 11th Chinese National Games was very critical for him to handle.After crossing the finishing line, Liu said, “The most important thing was to finish the race safely and smoothly.The result is not very good but the effort was not bad.”
With the final result of 13.34 seconds, Liu became the first Chinese hurdler to win a National Games title three times.“I’m feeling very good now,” Liu said.“I started to compete at the National Games at the age of 18 and now I’m 26.I hope I can run at the Games again in four years’ time because, for all Chinese athletes, is a dream and it is also my starting point.I would just like to thank all the people who have supported me and all the spectators who cheered for me here.”
It is hard for most of Liu’s fans to forget the heartbroken moment at Bird’s Nest last year at the Beijing Olympics because of the foot injury.Thirteen months later, however, the strong-minded man thrilled the home crowd with the strong comeback and would gain another take–off in his career.“I never thought of coming back when I got injured and I felt my future was in doubt,”Liu said, “But now I have seen there is still a future.”
1.When will the 12th Chinese National Games be held?
A.2012 B.2013 C.2014 D.2015
2.Which of the following statement is TRUE?
A.Liu Xiang was very confident after he knew his foot was badly injured.
B.Liu Xiang beat Terrence Trammell in the Shanghai Golden Grand Prix meet.
C.Liu Xiang had won three gold medals in the National Games before October 25, 2009.
D.Liu Xiang couldn’t have won this gold medal without his strong will and people’s support.
3.What’s the best title for the article?
A.A Legend–Liu Xiang B.Liu Xiang Is Back
C.Champion of The National Games D.Never Give Up
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● Breakfast
● The service of guides
● Government taxes
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Like to know more ? Telephone Newmarket Air Holidays Ltd on:0845-226-7788(All calls charged at local rates).All the following are included in the price of ¥12,000 EXCEPT.
A.transport between the airport and the hotel |
B.telephone calls made by tourists |
C.the service of guides to tourists |
D.double rooms for every two tourists |
If you don’t like sharing a room with others,you have to pay.
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If you like to visit historical sites,which of the following is your best choice?
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Who is the advertisement intended for?
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