题目内容

14.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 30minutes.This gives the doctor a longer time to do something for the brain.
Dr.White tried his idea on 13monkeys.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 30minutes,he turned the blood back on.He warmed the blood again.After their operations the monkeys were like what they had been before.They were healthy and busy.Each one could still do the jobs the doctor had taught them.

5.The biggest difficulty in operating on the damaged brain is thatA.
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
6.The brain operation was made possible mainly byD.
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
7.With Dr.White's new idea,the operation on the damaged brainA.
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
8.What is the right order of the steps in the operations?B
a.send the cooled 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,d                 B.c,a,b,d                 C.c,b,d,a                 D.b,c,d,a.

分析 本文讲述了传统脑部手术的弊端,就是提供给医生操作的时间太少了.Dr.White 医生发明了一种新的方法,通过这种方法可以延长脑部手术的操作时间.

解答 ADAB
5.A 考查细节理解.根据"Without enough blood,the brain lives for only three to five minutes.More often the doctors can't fix the damage"可知,在受损的大脑中操作的最大困难是,提供给医生操作的时间太少了.故选A.
6.D 考查细节理解.根据"He thinks doctors should make the brain very cold.If it is very cold,the brain can live without blood for 30minutes.This gives the doctor a longer time to do something for the brain."可知,进行大脑的手术主要是通过降低大脑的温度来进行的.故选D.
7.A 考查细节理解.根据"Dr.White stopped the blood to the brain.After 30minutes,he turned the blood back on"可知,通过新的方法,手术时间最长可达30分钟.故选A.
8.B 考查细节理解.根据文章内容可知,操作步骤的正确顺序是先让血液冷却下来,然后把冷却后的大脑血液送回大脑.再停止将血液送到大脑,最后进行手术.故选B.

点评 阅读理解考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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To:(happulizijun)@yahoo.com.cn
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Hi,Li Zijun,
Thanks very much for your email.I really enjoyed reading it.I think we have a lot in common.I wonder if our school life is similar too.
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We have a lot of homework to do in senior school to prepare for our exam,so unless I have basketball practice,I usually go straight home and start studying.I arrive home about 4pm,make myself a snack and work till 6.Then I help the family to make dinner and we all eat together.I'm usually back in my room studying by 8pm.I stop at about 10o'clock and watch TV or read a book for half an hour to relax.On Saturdays,I usually go out with my family or with friends and I sleep in till late on Sunday mornings.Then it's back to the books on Sunday afternoon.
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