74. 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

73. 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

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.

1.(2011·山东卷)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　

59.A drive suspeced of drink driving_________.

A.Should provide specimens for testing.

B.be forbidden to drive for 3years

C.Will be punished for 10 driving-offence points

D.Should pay a maximum fine of HK＄25,000

[答案]CDBA

57.The underlined word “it” in the second paragraph refers to “________”.

　A. alcohol　　　 B. absorption　　 C. blood　　　　 D. process

58 Which of the following is TRUE according to the passage?

　A. Drinking below the drink driving limit has no effect on driving.

　B. Alcohol is taken in more quickly when drunk with fruit juice.

　C. Having a cup of tea helps to get rid of alcohol from the body.

　D.50 milligrams of alcohol per 100ml of breath is below the drink limit

56.The first paragraph is mainly about_____________.

A. the introductions of driving skills　 B. the dangaga of drinking to your body

C. the effect of drinking on driving　　　 D. the process of alcohol being absorbed

12.(2011·福建卷)A

Driving a car is not just handling controls and judging speed and distance. It requires you to predict what other road users will do and get ready to react to something unexpected , When alcohol is consumed, it enters your bloodstream and acts as a depressant (抑制药)，damaging eyesight, judgment and co-ordination (协调)，slowing down reaction time and greatly increasing the risk of accidents. Even below the drink driving link , driving well be affected.

Alcohol may take a few minutes to be absorbed into the bloodstream and start action on the brain. Absorption rate is increased when drinking on an empty stomach or when consuming drinks mixed with fruit juice. To get rid of alcohol from the body is a very slow process and it is not possible to speed it up with any measures like taking a shower or having a cup of tea or coffee.

The present Road Traffic Ordinance states clearly that the limit of alcohol concentration is :

● 50 milligrams of alcohol per 100ml of blood ;or

● 22 micrograms of alcohol per 100ml of breath ;or

● 67 milligrams of alcohol per 100ml of urine(尿液)

Drivers who cause traffic accidents, or who commit a moving traffic offence or are being suspected of drink driving will be tested.

Any drive found drinking beyond the limit will be charged.The driver declared guilty may be fined a maximum of HK﹩25,000 and be sentenced to up to 3 years in prison and punished for 10 driving-offence points; or temporarily banned from driving.

The same punishment applices to failing to provide speciments(样本) far breath, blood or urine tests without good excuse.

Drink driving is a criminal offebce.Be a responsible,driver,think before you drink. For the safety of yourself and other road users, never drive after consuming alcohol.

70. What is the main cause of the rising number of the homeless in the U.S.?

A. The passing of new housing laws.

B. The fast growth of family size.　　　　　　　　　　　　　　

C. The slow construction of houses.

D. The ever-rising price of housing.

[答案]BCAD

69. Homeless people often have difficulty finding a job because________.

A. they have no home addresses

B. they mostly have a drinking problem

C. they aren't supported by government programs

D. they often don't have enough work experience