5．
In Silicon Valley，it's never too early to become an entrepreneur．Just ask 13-year-old David Moore．The eighth-grader has launched a company last October to develop low-cost machines to print Braille （布萊葉盲文）．David built a Braille printer with a Lego Mindstorms EV3kit as a school science fair project last year after he asked his parents a simple question：How do blind people read？"Google it，"they told him．David then did some online research and was shocked to learn that Braille printers cost at least 2，000dollars-too expensive for most blind readers．
"I just thought that price should not be there．I know that there is a simpler way to do this，"said David，who demonstrated how his printer works at the kitchen table where he spent many late nights building it．David wants to improve the"Braigo"-a name that combines Braille and Lego-and develop a desktop Braille printer that costs around 350dollars and weighs just a few pounds，compared with current models that can weigh more than 20pounds．"My end goal would probably be having most of the blind people…using my Braille printer，"said David，who lives in the Silicon Valley suburb of Santa Clara，just minutes away from Intel headquarters．
After the Braigo won numerous awards and enthusiastic support from the blind community，David started Braigo Labs last summer with an initial 35，000dollars investment from his dad．"We as parents started to get involved more，thinking that he's on to something and this new way process has to continue，"said his father，Matthew Moore，an engineer who works for Intel．
Intel officials were so impressed with David's printer that in November they invested an undisclosed sum in his start-up．They believe he's the youngest entrepreneur to receive venture capital money invested in exchange for a financial stake in the company．"He's solving a real problem，and he wants to go off and challenge an existing industry，"said Edward Ross，director of Inventor Platforms at Intel．Now the company is using the money to hire professional engineers and advisers to help design and build Braille printers based on David's ideas．It aims to have a prototype （樣機） ready for blind organizations to test this summer and have a Braigo printer on the market later this year．
66．Which of the followings is Not the description of Braigo？C
A．The name"Braigo"comes from Braille and Lego．
B．The blind are in favor of the new type of printer．
C．It costs less money and weighs just a few pounds．
D．David planned to improve Braigo and make it lighter but easier to use．
67．Which of the following words can best describe David's personalities？D
A．Adventurous and enthusiastic．
B．Trustworthy and active．
C．Childish and outgoing．
D．Creative and independent．
68．Which of the following is the correct order？A
①．Intel officials invested money in David's start-up．
②．David launched a company．
③．David got an initia l35，000dollars investment from his dad．
④．David created a new Braille printer model called Braigo．
⑤．Braigo Labs hired professional engineers and advisers to help design and build Braille
Printers．
A．④③②①⑤
B．④②⑤①③
C．③⑤④②①
D．②①④⑤③
69．What can we learn from Paragraph 4？A
A．Intel didn't announce the amount of money it invested．
B．No one else has ever received venture capital from Intel．
C．Intel purchased David's ideas to design and build Braille printers．
D．Braigo printers have been on the market and proved a great success．
70．The passage is most probably taken from．B
A．a(chǎn) sports section
B．a(chǎn) science section
C．a(chǎn) culture section
D．a(chǎn)n entertainment section．
