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.
【小题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 |
| 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 |
| 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 |
| A．a,b,c,d | B．c,a,b,d | C．c, b, d, a | D．b, c, d, a |
【小题1】A
【小题2】D
【小题3】A
【小题4】B
解析试题分析：文章介绍了一种新型的对脑部进行手术的方法，即通过冷却血液的方法来延长手术时间。
【小题1】A 推理题。根据第一段第二句Without enough blood, the brain lives for only three to five minutes.说明如果大脑没有血，脑部很快就会死亡的，故对医生来说最大的问题就是时间。
【小题2】D 细节题。根据第二段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.说明他想出的方法是冷却大脑，让大脑在冷却的状态下，进行手术。
【小题3】A 推理题。根据第二段第2行If it is very cold, the brain can live without blood for 30 minutes.说明大脑在冷却的情况下可以活30分钟，说明这样的手术也至少可以进行30分钟，故A正确。
【小题4】B 排除题。根据文章第三段内容：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可以先冷却血，然后再把血送回大脑，当温度到10度的时候停止血液的流动，接着就对大脑进行手术。故B正确。
考点：考查科技说明文短文阅读
点评：该类短文科技含量较高，生词较多，需要考生有一定耐心，不要被生词难住，这些生词是不影响答案的，同时也要加强推理能力的培养，如65题。
世纪百通主体课堂小学课时同步达标系列答案
世纪百通优练测系列答案科目：高中英语 来源： 题型：
This is not an economical way to get more water; ________, it is very expensive.
A．on the contrary B．on the other hand
C．in a word D．rather than
查看答案和解析>>
科目：高中英语 来源： 题型：
. It is difficult for us to learn a lesson in life __________ we’ve actually had that lesson.
A. until B. after
C. since D. when
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
Dorothy Brown was very happy as she sat in the theatre listening to the music. Today her little daughter Lauren was giving her ___1___ concert. She had been waiting for this __2__ for years and years. “Now it is here at last,” she thought. “How beautiful her ___3___ is.”
The song made her ___4___ to the days when she was Lauren’s ___5___. As a young ___6___, Dorothy wanted to be a concert singer. She studied ___7___ in France, Italy and in the United States. “You can become a fine ___8___ in the future,” her teachers told her. “But you must be ___9___ to study hard and work for many years. There will be ___10___ time for anything but music in your life.”
Dorothy was ___11___ at that time and she was ___12___ that music was all she wanted or needed to ___13___ her life. For almost a year Dorothy ___14___ of nothing else. Then she ___15___ David, a young engineer traveling Europe. They soon fell in ___16___. David asked her to be his ___17___. Dorothy also wanted to marry David. But she loved ___18___, too. She didn’t know what to do. David was against her being a singer. He said, “If you want to be a singer, you must forget about getting married. You can’t ___19___ do both.” Thus her days were gone and would never return.
Now Lauren became a singer instead of her, which was her ___20___.
1. A. sorry B. successful C. first D. wonderful
2. A. dance B. moment C. show D. party
3. A. voice B. face C. dress D. life
4. A. think of B. bring back C. go back D. come back
5. A. age B. friend C. mother D. teacher
6. A. musician B. pop star C. lady D. girl
7. A. French B. music C. piano D. dance
8. A. actress B. student C. singer D. dancer
9. A. prepared B. learning C. driven D. waiting
10. A. some B. any C. no D. enough
11. A. eight B. eighteen C. eighty D. eighty-eight
12. A. lucky B. sure C. afraid D. fond
13. A. fill B. live C. lead D. take
14. A. heard B. knew C. talked D. thought
15. A. saw off B. learned from C. heard of D. met with
16. A. love B. feeling C. music D. touch
17. A. assistant B. teacher C. wife D. student
18. A. him B. engineering C. herself D. music
19. A. certainly B. possibly C. only D. mainly
20. A. thought B. hope C. purpose D. will
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
If you travel around the world , you will be surprised to find just how different the foreign customs can be from your own .
A visitor to India would do well to remember that people there consider it impolite to use the left hand for passing food at table . The left hand is supposed to be used for washing yourself . Also in India , you might see a man apparently shaking his head at another and assume that he is disagreeing . But in many parts of India a shake of the head is a gesture that shows agreement of acceptance .
Nodding your head when offered a drink in Bulgaria is likely to leave you thirsty . In that country you shake your head to indicate “yes” —a nod indicates “no”. The Arabs are known for their hospitality . At a meal in countries on the Arabic Peninsula , you will find that any drinking vessel （容器，器皿）is repeatedly refilled as soon as you drink it up .
In Europe it is quite usual to cross your legs when sitting talking to someone , even at an important meeting . Doing this when meeting an important person in Thailand , however , could cause offence . It is too informal an attitude for such an occasion . Also when in Thailand you are not supposed to touch the head of an adult —it’s just not done . In Japan , it is quite usual for men to plan evening entertainments for themselves and leave their wives at home . In Europe such attitudes are disappearing .
Customs vary from country to country . Visitors may be at a loss as to what to do in a foreign environment . In such circumstances , the golden rule to follow is : When in Rome , do as the Romans do .
60．In which country , a left — hand is not welcomed ? .
A．Thailand B．India C Arabic peninsula D．Bulgaria
61．In which country , if someone shakes his head at another , it shows that he agrees or accepts ?
.
A．Bulgaria B．Thailand C．China D．Arabic Peninsula
62．Which of the following is impolite in Europe ? .
A．to cross your legs
B．to touch the head of an adult
C．That men plan evening entertainment and leave their wives at home
D．To drain the glass in your hand
63．If you don’t know the customs in the country where you visit , the golden rule to follow is .
A．to do as the Romans do B．to do nothing
C．to visit Rome only D．to do as the natives do
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
One topic is rarely mentioned in all the talk of improving standards in our schools: the almost complete failure of foreign-language teaching. As a French graduate who has taught for more than twenty-five years, I believe I have some idea of why the failure is so total. 21 the faults already found out in the education system as a whole — such as child-centred learning, the “discovery” method, and the low expectations by teachers of pupils — there have been several serious 22 which have a direct effect on language teaching.
The first is the removal from the curriculum (课程) of the thorough teaching of English 23 . Pupils now do not know a verb from a noun, the subject of a sentence from its object, or the difference between the past, present, or future.
Another important error is mixed-ability teaching, or teaching in ability groups so 24 that the most able groups are 25 and are bored while the least able are lost and 26 bored. Strangely enough, few head teachers seem to be in favour of mixed-ability school football teams.
Progress depends on memory, and pupils start to forget immediately they stop having 27 lessons. This is why many people who attended French lessons at school, even those who got good grades, have 28 it a few years later. Because they never need it, they do not practice it.
Most American schools have accepted what is inevitable and 29 modern languages, even Spanish, from the curriculum. Perhaps it is time for Britain to do the same, and stop 30 resources on a subject which few pupils want or need.
21. A. Due to B. In addition to C. Instead of D. In spite of
22. A. errors B. situations C. systems D. methods
23. A. vocabulary B. culture C. grammar D. literature
24. A. wide B. similar C. separate D. unique
25. A. kept out B. turned down C. held back D. left behind
26. A. surprisingly B. individually C. equally D. hardly
27. A. extra B. traditional C. basic D. regular
28. A. needed B. forgotten C. practised D. left
29. A. restored B. absorbed C. prohibited D. withdrawn
30. A. wasting B. focusing C. exploiting D. sharing
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com