问题 单项选择题

某生分析下表后就得出了以下四项结论,其中错误的是()

英国棉纺业劳工分布表

①在棉纺业,手工织造直到1829—1831年间仍占主导地位

②工厂工人人数的增长反映工业革命的发展

③1844—1846年间棉纺业劳工总人数减少说明英国轻工业比重下降

④工业革命改变了英国人口的职业结构

A.①②

B.①④

C.②③

D.③④

答案

参考答案:D

解析:A.①②B.①④C.②③D.③④

阅读理解

阅读理解.

     Since the 1970s,scientists have been searching for ways to link the brain with computers.

Braincomputer interface (BCI) technology could help people with disabilities send commands

to machines.

     Recently,two researchers,Jose Millan and Michele Tavella from the Federal Polytechnic

School in Lausanne,Switzerland,demonstrated(展示)a small robotic wheelchair directed by

a person's thoughts.

     In the laboratory,Tavella operated the wheelchair just by thinking about moving his left or

right hand.He could even talk as he watched the vehicle and guided it with his thoughts.

     "Our brain has billions of nerve cells.These send signals through the spinal cord(脊髓)to

the muscles to give us the ability to move.But spinal cord injuries or other conditions can

prevent these weak electrical signals from reaching the muscles,"Tavella says."Our system

allows disabled people to communicate with external world and also to control devices."

     The researchers designed a special cap for the user.This head cover picks up the signals

from the scalp(头皮)and sends them to a computer.The computer interprets the signals and

commands the motorized wheelchair.The wheelchair also has two cameras that identify objects

in its path.They help the computer react to commands from the brain.

     Prof.Millan,the team leader,says scientists keep improving the computer software that

interprets brain signals and turns them into simple commands."The practical possibilities that

BCI technology offers to disabled people can be grouped in two categories:communication,

and controlling devices.One example is this wheelchair."

     He says his team has set two goals.One is testing with real patients,so as to prove that this

is a technology they can benefit from.And the other is to guarantee that they can use the

technology over long periods of time.

1.BCI is a technology that can ________.

A.help to update computer systems

B.link the human brain with computers

C.help the disabled to recover

D.control a person's thoughts

2.How did Tavella operate the wheelchair in the laboratory?

A.By controlling his muscles.

B.By talking to the machine.

C.By moving his hand.

D.By using his mind.

3.Which of the following shows the path of the signals described in Paragraph 5?

A.scalp→computer→cap→wheelchair

B.computer→cap→scalp→wheelchair

C.scalp→cap→computer→wheelchair

D.cap→computer→scalp→wheelchair

4.The team will test with real patients to ________.

A.make profits from them

B.prove the technology useful to them

C.make them live longer

D.learn about their physical condition

5.Which of the following would be the BEST title for the text?

A.Switzerland,the BCI Research Center

B.New Findings about How the Human Brain Works

C.BCI Could Mean More Freedom for the Disabled

D.Robotic Vehicles Could Help to Cure Brain Injuries

问答题