[不定项选择题]共用题干 Pain
All of us have felt pain.We have cut ourselves.We have been burned.Or we have had headaches. Some of us suffer pain rarely.______(46)
Pain can take complete control of our body and mind,making it impossible to move and even to think. Yet we need pain.Without it,we would not know if we have hurt ourselves.It is our body's warning system.______(47) Pain is the most common reason we go to a doctor.It is the most common reason we take medicines.
Until recently,however,most doctors knew of only a few drugs that stopped some pains.______(48)But new knowledge about the process of pain is helping them to control pain better.
Scientists have learned that the sense of pain is made up of both chemical and electrical signals.______(49)Scientists also have learned that the nervous system sends two different kinds of pain messages to the brain:one very fast,the other slow.The first message is the warning signal.It moves at a speed of 30 meters a second.In less than a second,the brain understands that part of the body is hurt and
how badly it is injured.______(50)It tells us not to use the injured part until it heals. ______(48)
A.And others have painful attacks all the time.
B.These signals travel from nerve cells in the injured area , up the spinal cord（脊髓）to the brain , and back down again.
C.It tells us that we are injured and should do something about it.
D.They knew little about the process of pain itself.
E.The other message moves at a g peed of only one meter a second.
F.And they send the second,slower message of pain to the brain.

[不定项选择题]共用题干 Pain
All of us have felt pain.We have cut ourselves.We have been burned.Or we have had headaches. Some of us suffer pain rarely.______(46)
Pain can take complete control of our body and mind,making it impossible to move and even to think. Yet we need pain.Without it,we would not know if we have hurt ourselves.It is our body's warning system.______(47) Pain is the most common reason we go to a doctor.It is the most common reason we take medicines.
Until recently,however,most doctors knew of only a few drugs that stopped some pains.______(48)But new knowledge about the process of pain is helping them to control pain better.
Scientists have learned that the sense of pain is made up of both chemical and electrical signals.______(49)Scientists also have learned that the nervous system sends two different kinds of pain messages to the brain:one very fast,the other slow.The first message is the warning signal.It moves at a speed of 30 meters a second.In less than a second,the brain understands that part of the body is hurt and
how badly it is injured.______(50)It tells us not to use the injured part until it heals. ______(50)
A.And others have painful attacks all the time.
B.These signals travel from nerve cells in the injured area , up the spinal cord（脊髓）to the brain , and back down again.
C.It tells us that we are injured and should do something about it.
D.They knew little about the process of pain itself.
E.The other message moves at a g peed of only one meter a second.
F.And they send the second,slower message of pain to the brain.

[不定项选择题]共用题干 Relieving the Pain

"Exercise may be the best treatment of chronic pain,"say doctors at a new clinic for dealing with pain.
"People with chronic pain need to stop lying around,go out more,and start exercising."The instinctive
reaction to acute pain is to stop moving and to try to protect the source of pain. But it seems that this is often not
productive,especially in the case of back pain. Back pain,after headaches and tiredness,has become the third
most common reason for people to visit their doctors.Painful backs now account for millions of days off work.
Lumbar（腰部的）pains are partly the price humans pay for taking their forelimbs off the ground, but
they are made worse by a sedentary（久坐不动的）lifestyle. Lack of exercise slowly decreases the flexibility
and strength of muscles,so that it is more difficult to take pressure off the site of pain.Exercise is essential.
It releases endorphins（内啡肽）,the body's "feel-good" chemicals, which are natural painkillers. In fact,
these are so important that researchers are now looking for drugs that can maintain a comfortable level of
endorphins in the body.
Most people who go to a family doctor complaining of pain are prescribed pain-killing drugs rather than
exercise.Since finding the cause of backache is not so easy,doctors frequently do not know the precise cause
of the discomfort,and as the pain continues,sufferers end up taking stronger doses or a series of different
drugs."It's crazy,"says Dr. Brasseur,a therapist at the International Association for the Study of Pain.
"Some of them are taking different drugs prescribed by different doctors.I've just seen a patient who was
taking two drugs which turned out to be the same thing under different names."
A generation of new pain clinics now operates on the basis that drugs are best avoided.Once patients
have undergone the initial physical and psychological check up,their medication is cut down as much as
possible.Taking patients off drugs also prepares them for physical activity.
In some pain一 relief clinics,patients begin the day with muscle contraction and relaxation exercises,
followed by an hour on exercise bikes. Later in the day,they practice tai chi（太极）,self-defense,and deep
thought. This compares with an average of two-and-a-half hours' physiotherapy（理疗）a week in a traditional
hospital program."The idea is to strengthen and to increase long一lasting energy,flexibility,and confidence,"
explains Bill Wiles,a consultant pain doctor in Liverpool."Patients undergoing this therapy get back to work
and resume healthy active lifestyles much sooner than those subjected to more conservative treatment." New pain clinics ask patients to give up drugs completely.
A.Right
B.Wrong
C.Not mentioned