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°C, 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 minutesB．can keep the brain' s blood warm
C．can keep the patient' s brain healthyD．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(chǎn),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

解析試題分析：文章介紹了一種新型的對(duì)腦部進(jìn)行手術(shù)的方法，即通過(guò)冷卻血液的方法來(lái)延長(zhǎng)手術(shù)時(shí)間。
【小題1】A 推理題。根據(jù)第一段第二句Without enough blood, the brain lives for only three to five minutes.說(shuō)明如果大腦沒(méi)有血，腦部很快就會(huì)死亡的，故對(duì)醫(yī)生來(lái)說(shuō)最大的問(wèn)題就是時(shí)間。
【小題2】D 細(xì)節(jié)題。根據(jù)第二段2,3句. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes.說(shuō)明他想出的方法是冷卻大腦，讓大腦在冷卻的狀態(tài)下，進(jìn)行手術(shù)。
【小題3】A 推理題。根據(jù)第二段第2行If it is very cold, the brain can live without blood for 30 minutes.說(shuō)明大腦在冷卻的情況下可以活30分鐘，說(shuō)明這樣的手術(shù)也至少可以進(jìn)行30分鐘，故A正確。
【小題4】B 排除題。根據(jù)文章第三段內(nèi)容：The machine cooled the blood. Then the machine sent the blood back to the monkeys' brains. When the brain' s temperature was 10°C, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on.推理得到Dr. White可以先冷卻血，然后再把血送回大腦，當(dāng)溫度到10度的時(shí)候停止血液的流動(dòng)，接著就對(duì)大腦進(jìn)行手術(shù)。故B正確。
考點(diǎn)：考查科技說(shuō)明文短文閱讀
點(diǎn)評(píng)：該類短文科技含量較高，生詞較多，需要考生有一定耐心，不要被生詞難住，這些生詞是不影響答案的，同時(shí)也要加強(qiáng)推理能力的培養(yǎng)，如65題。

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