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It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can’t fix the damage．Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain.
Dr．Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain．
Dr．White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on them. He made the monkeys’ blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys’ brains. When the brain’s temperature was 10 ℃, Dr．White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them．
小題1:The biggest difficulty in operating on the damaged brain is that____ ．
A．the time is too short for doctors
B．the patients are often too nervous
C．the damage is extremely hard to fix
D．the blood-cooling machine might break down
小題2:The brain operation was made possible mainly by____ ．
A．taking the blood out of the brain
B．trying the operation on monkeys first
C．having the blood go through a machine
D．lowering the brain’s temperature
小題3:With Dr. White’s new idea, the operation on the damaged brain____ ．
A．can last as long as 30 minutes
B．can keep the brain’s blood warm
C．can keep the patient’s brain healthy
D．can help monkeys do different jobs
小題4:What is the right order of the steps in the operation?
a．send the cooled blood back to the brain 　　b．stop the blood to the brain
c．have the blood cooled down 　　         d．operate on the brain
A．a,b,c,dB．c,a,b,dC．c,b,d,aD．b,c,d,a

小題1:A
小題2:D
小題3:A
小題4:B
文章講述了一個新的治療腦部受傷的療法—冷卻法。
小題1:細節(jié)題。根據(jù)第一段2,3行Without enough blood, the brain lives for only three to five minutes. More often the doctors can’t fix the damage．
小題2:推理題。根據(jù)第二段內容He thinks doctors should make the brain very cold.可知是通過降低腦部的溫度來降低危險。
小題3:細節(jié)題。根據(jù)第二段2,3行the brain can live without blood for 30 minutes.
小題4:排序題。根據(jù)最后一段內容可知A正確。
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Data on diet among 3，500 middle-aged civil servants(公務員)were compared with their emotional state five years later，a British journal reported．They split the participants into two types of diet--those who ate a diet largely based on whole food，which inc!udes lots of fruit， vegetables and fish，and those who ate a mainly processed food diet，such as sweetened desserts，fried food，processed meat，refined grains and high fat dairy products After accounting for factors such as gender，age，education，physical activity，smoking habits and chronic(慢性的) diseases，they found a significant difference in the future depression risk with the different diets．
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B．the present study needs more facts and other information
C．the UK population will become ill in the near future
D．more saturated fats and sugars should be taken in
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A．She knew for sure how coffee may affect drinkers.
B．She included 4,000 people without cancer in study.
C．She found an effect for three cups of coffee a day.
D．She based her research on several earlier studies.
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