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

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.
【小题1】The researchers at the -University of California found that children who received CT scans

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.

1.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

2.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．

3.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．

4.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

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

1. 1.

   The researchers at the -University of California found that children who received CT scans

   1. A.
      were likely to suffer brain injuries
   2. B.
      wouldn’t have normal mental activity
   3. C.
      would lose consciousness now and then
   4. D.
      were likely to develop canter
2. 2.

   How many aspects should doctors consider when deciding whether a child under two needs a CT scan?

   1. A.
      Four．
   2. B.
      Six．
   3. C.
      Seven．
   4. D.
      Nine．
3. 3.

   What can we learn from the last two paragraphs?

   1. A.
      Texting is harmful to patients’ recovery from concussions．
   2. B.
      Patients with brain injuries can play many sports．
   3. C.
      Adults need a longer time than teens to recover from concussions．
   4. D.
      It takes at least a year for individuals with brain injuries to fully recover．
4. 4.

   The author of the passage mainly___．

   1. A.
      describes the risks of brain injuries
   2. B.
      suggests CT scans are of practical use
   3. C.
      tells us about the risks of brain injury tests
   4. D.
      argues against new guidelines for concussions

Recently a man came to me, because he was told that there is fluid (积液) around his heart. After trying many drugs which were of no use to reduce the fluid, the doctor told him the only other choice was to have an operation. He refused because he knew that every illness has a mental cause and that if he had the operation but did not clear the mental cause, the fluid would return. At last, he searched the Internet to find a psychologist (心理专家), and he found me.

The mental cause of his disease was an experience of breaking up five years ago with several friends, whom he had known for over twenty years. This experience broke his heart. Not knowing how to “mend” his broken heart, his body created a “repair” by surrounding his heart with fluid to protect it from the sad feelings.

Much of our work was done to make him recognize the feelings of being loved and forgiving (原谅) his friends. Months later, his heart was mended and the fluid disappeared. He left my office after the final meeting with a smile on his face.

The key is: to create a healthy body, you must be healthy not only in body, but also in mind.

　　 To be mentally healthy, you need to build up strong relationships. Creating strong relationships will make it certain that you are living together in a network of loving persons. It is important for building a support system that lifts your spirits. Even when you are alone, you will not feel lonely or upset. Strong relationships are not spaceships——they are not hard to build.

71. In order to cure(治愈) his illness, which of the following ways did the patient try?

A.taking many medicines B. having an operation

C. seeing a metaphysical healer D. visiting different doctors

72. The underlined word “It” in Paragraph5 refers to “________”.

A. a mentally healthy body B. a repaired heart

C. a network of loving persons D. a support system

73. What is the main idea of the passage?

A. Loving others will keep you in good spirits.

B. Heart illness can be cured without operation.

C. Creating strong relationships will keep you healthy.

D. Mental health is necessary for physical health.

74. Which of the following views may the writer agree to?

A. Old friendship is easy to lose.　　　　　

B. A good friendship is a useful medicine.

C. The best doctor is your own body.　　　　　

D. It needs many efforts to build relationships.

75. If this passage is continued with another paragraph, what would it be probably about?

A. How to build strong relationships　　　 　 B. How to protect your heart

C. How to keep healthy mentally D. How to live a healthy life