历年的高考英语试题,全面。答案解析全面详细。有效的帮助你的学习,祝你高考顺利。

款，而好消息是联邦政府承担着四分之三的学生贷款。因此推断是D，政府将继续承担对大

学生的资金援助。

D

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

Brain-computer interface(BCI) technology could help people with disabilities send commands to

machines.

Recently, two researchers, Jose Milan 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 band. He could even talk as he watched the vehicle and guided it with his thoughts.

―our brain has billions of nerve ceils. 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. Milan, 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.

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

72. 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.

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