A Concussion happens when the brain is shaken, often in a car crash or a fall or a strike on; the he——青夏教育精英家教网—

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

某校高三年级对如何填报高考志愿作了一次问卷调查，结果如下表所示，请根据表中信息简要介绍这次调查结果，并发表你的个人看法。

约35%的同学认为

约45%的同学认为

约20%的同学认为

*应以个人兴趣为主

*被迫学自己不感兴趣的专业

是痛苦的

*应以社会需要为主

*兴趣是可以培养和改变的

*如何选择，是一难题

*应听从父母和老师的意见

Senior middle school graduates of our school have different opinions on how to choose their courses and universities．

England is rather short of arable land , so it is absolutely dependent upon other countries for her food __________．

A．offers B．stores C．supplies D．sales

_______ miss the train, he got up very early this morning.

A．In order to not B．So as to not C．In order not to D．So as not to

With no better way to express feelings of love and _________, it's easy to see why everyone turns to the flower shop on Mothers’ Day.

A. appreciation B. inspiration C. satisfaction D. ambition

The job is great in terms of salary ．It has its disadvantages, _______ ．

A．though B．however C．even D．therefore

There are ______ to show that a new , different city is coming out of its dark past ．

A．signals B．marks C．signs D．symbols

There is a feeling in me _____ we’ll never know what a UFO is----not ever.

20081018

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Future success depends on the ability to learn. Here are the answers to the questions most often asked by students. Read this book and learn:

*What the three barriers to study are and what to do about them

* What to do if you get tired of a subject you are studying

*Twenty-six simple drills to help you learn how to study easily, rapidly and with full understanding

Buy and read the Basic Study Manual and use it to dramatically improve your ability to study.

Study Skills for Life (Hardcover): $31.99

L. Ron Hubbard’s study technology for teenagers opens the door to their future success by giving them advice on how to study and learn. Fully illustrated（插图）for easy comprehension.

Learning How to Learn (Hardcover):$24.99

The basics of effective study for 8 to 12-year-olds, fully illustrated. Children who read and apply the materials in this book can regain their liking for study. Get this book for a child you want to see win at his studies!

How to Use a Dictionary Picture Book for Children (Hardcover):$34.90

In spite of billions of dollars spent on “educational research”, children are not taught the most basic skills of learning: how to use a dictionary. Written for children 8 to 12-year-old, this fully illustrated book will teach your children:

*How to find words in a dictionary

*The different ways that words are used

*How to use a dictionary to correctly pronounce words

At last, you’ll just pay 50% for these books before May 1, 2007. （260 words）

The four books can mostly satisfy .

A. teachers B. children C. adults D. parents

If you want to improve your ability to study, you’ll probably choose .

A. Basic Study Manual B. Study Skills for Life

C. Learning How to Learn D. How to Use a Dictionary Picture Book for Children

If you buy all the fully illustrated books before May 1, 2007, you will pay about .

A. $56 B. $111 C. $46 D. $92

This passage aims to .

A. introduce new books to readers B. guide readers to choose books

C. encourage people to buy the books D. enlarge students’ knowledge about books

It’s you and I who are to blame for the state of the earth. No question about it. It’s our life-style that is threatening life on Earth, so we must make the changes. The good news is that many of those changes are really quite simple, even enjoyable, but for every careful step we take as individuals , we must press government and industry to take a big step on our benefit . And we must start now. Tomorrow’s too late.

My aim this year is to persuade as many of my friends and colleagues as possible to choose the train, and leave their cars behind too. My gardens have been pesticide(杀虫剂)–free zones for years and I enjoy seeing more wildlife on my doorstep as a result; I’ve tried to reduce my contribution to water pollution too, by using environment-friendly, phosphate(磷)–free washing powder , and by no longer thinking of the toilet as a suitable waste-disposal(处理) point .

I ran after a young lady through town recently to give her back the piece of paper she had carelessly thrown away. She disappeared into a shop, and when I followed her inside and made my presentation, she was doubly embarrassed--she worked there, and the boss gave her a ticking–off too. I’ve started asking fellow drivers at gas stations why they aren’t using unleaded (无铅的) petrol . These are small things, but we have to start somewhere, and every little does help .

To help the environment, the author is trying to do everything mentioned below EXCEPT .

A．taking the train instead of a car

B．throwing away the old cars

C．avoiding the use of pesticides

D．running after those who throw articles carelessly

The author ran after a woman through town because he wanted .

A．to find out where she worked

B．to give her back the piece of paper she had lost

C．to tell her not to throw away pieces of paper carelessly

D．to ask her to pay him for picking up the piece of paper.

The word “ticking-off ” in the last paragraph probably means .

A．blaming B. a piece of paper C．prize D. ticket

The purpose of this passage is to .

A. persuade his friends to take the train

B. inform us of the good news

C. make clear who is responsible for the environment

D. try to advise us all to protect our environment

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