导致英国工业革命的直接原因是：（）A.海外市场和原料产地的拓展 B.分工的发展使劳动

一名有被害妄想的患者常常花许多金钱和精力，不知疲倦地到处控诉他妄想中的敌人。这种现象被称为( )。

A．意向缺乏

B．强迫意向

C．意向增强

D．意向倒错

引风机计划停运分为大修、（）和定期维护三种。

A、小修

B、消缺

C、引风机电机试验

D、备用

一个公司能否经营成功，取决于很多因素，主要有

①制定正确的经营战略

②依靠技术进步、科学管理等手段，形成自己的竞争优势

③要诚信经营，树立良好的信誉和企业形象

④致力于企业的兼并，努力实现企业重组

A．①②④

B．①③④

C．②③④

D．①②③

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 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小题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小题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小题4:. What is the right order of the steps in the operations?

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

引起系统误差的原因是（）。

A.试验前仪器未校正

B.测量者感官障碍

C.受试者个体差异

D.多人参与标准不统一

E.以上均不是