16．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 to send orders to machines．
Recently，two researchers，Jose Milan and Michele Tavella from the Federal Polytechnic school in Lausanne，Switzerland，showed 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 cases can prevent these weak signals from reaching the muscles，"Tavella says．"Our system allows disabled people to communicate with the outside world and also to control machines．"
The researchers designed a special cap for the user．This cap picks up the signals from the scalp（頭皮） and sends them to a computer．The computer interprets the signals and commands the robotic 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 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．

12．How did Tavella operate the wheelchair in the laboratory？D
A．By controlling his muscles．
B．By talking to the machine．
C．By moving his hand．
D．By using his mind．
13．Which of the following shows the path of the signals described in Paragraph 5？C
A．scalp→computer→cap→wheelchair    
B．computer→cap→scalp→wheelchair
C．scalp→cap→computer→wheelchair    
D．cap→computer→scalp→wheelchair
14．The team will test with real patients toB．
A．make profits from them              
B．prove the technology useful to them
C．make them live longer               
D．learn about their physical condition
15．Which of the following would be the best title for the text？C
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．

分析 本文是一則新聞報道，科學(xué)家尋找到了一種方法，把人腦與電腦連接起來，進(jìn)而發(fā)明了Brain-computer interface（BCI）技術(shù)的發(fā)明，文中介紹了它的原理和對殘疾人帶來的益處．

解答 12．D．細(xì)節(jié)理解題．根據(jù)第二段"Tavellaoperated the wheelchair just by thinking about moving his left or right band．"可知Tavella是用他的頭腦在實驗室操作的輪椅．故選D．
13．C．細(xì)節(jié)理解題．根據(jù)第五段The researchersdesigned a special cap for the user．This head cover picks up the signals fromthe scalp（頭皮） and sends them to a computer．Thecomputer interprets the signals and commands the motorized wheelchair．Thewheelchair also has two cameras that identify objects in its path．They helpthe computer react to commands from the brain可知信號的路徑是頭皮→帽→計算機(jī)→輪椅．故選C．
14．B．細(xì)節(jié)理解題．根據(jù)最后一段"to prove thatthis is a technology they can benefit from．"，證明他們可以從中獲得的好處．故選B．
15．C．主旨大意題．本文是新聞文體，因此要關(guān)注首段的中心，由首段的第二句話"Brain-computer interface（BCI） technology could help people withdisabilities send commands to machines．"可知bci可能意味著殘疾人更多的自由；故選C．

點評 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力，做細(xì)節(jié)理解題時一定要找到文章中的原句，和題干進(jìn)行比較，再做出正確的選擇．在做推理判斷題不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進(jìn)行合乎邏輯的推理判斷．

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D．test their power-control
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A．Fill in the expenses as they really are
B．Avoid spending money on expensive things．
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A．
Monthly IncomeAmountMonthly ExpenseAmount
Allowance 20.00Money earned walking dogs 20.00
Bus fares  40.00Movies 28.00
Total 60.00Total 48.00
B．
Monthly IncomeAmountMonthly ExpenseAmount
Allowance 20.00Movies 30.00
Money earned washing cars 10.00Bus fares 10.00
Total 30.00Total 40.00
C．
Monthly IncomeAmountMonthly ExpenseAmount
Allowance 27.50Money earned brushing shoes 22.00
Money earned washing dishes 22.50Birthday gifts 28.00
Total 50.00Total 50.00
D．
Monthly IncomeAmountMonthly ExpenseAmount
Allowance 26.00Video rental 22.00
Money earned doing yard work 24.00Birthday gifts 28.00
Total 50.00Total 50.00
60．The passage mainly tells usB．
A．the importance of making a budget       
B．how to make a budget
C．how to form good habits              
D．how to spend money．

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