Cathy is a tetraplegic．She has not been able to move her arms，legs or speak since suffering a stroke（中风）nearly fifteen years ago．Recently，she learned how to control a robotic arm using her thoughts．She now can use brain activity to serve herself a drink．

       The American woman is one of two people who took part in a research project known as BrainGate2．The researchers have spent years studying how to help people who are disabled regain movement in their arms and legs．

       John，who is a neuroscientist（神经科学家）and also was part of the project，said，“Our idea is to avoid that damaged nervous system and go directly from the brain to the outside world，so the brain signals can，not control muscle，but control machines or devices（设备）like a computer or a robotic arm．”

       The two disabled people had small sensors connected to the part of the brain that controls movement．The devices measured brain activity and sent that information to a computer．The computer has special software that turns the information into digital commands for operating other devices．The researchers used a highly developed robotic arm to recreate human actions．

The BrainGate team had its first success in 2006．A victim was able to use the brain—computer system to control a computer mouse．John says the latest development using robotic arms is a major victory．

A video of the latest experiment shows Cathy using the robotic arm to pick up a cup of coffee．She guides the cup toward her mouth，moves it forward and drinks through a straw．

       Lead researcher Leigh Hochberg said it was an unbelievable moment?

       The research team carded out almost 200 tests with two different robotic arms，which were able to pick up their target objects 43％to 66％of the time．

       The researchers are calling the information very promising．But they say it will take years to fully develop the technology for everyday use．

71．What can we know about Cathy from this passage?

       A．She is an expert about the stroke．

       B．She is a disabled woman who can't walk at all．

       C．She is a scientist and is also part of the project．

       D．She is a researcher taking part in the project．

72．How does the robotic arm work?

73．Why did Leigh Hochberg say it was an unbelievable moment?

       A．Because the latest experiment of using robotic arms has succeeded．

       B．Because the BrainGate team had its first Success in 2006．

       C．Because the two disabled people can move and speak．

       D．Because he was part of the project．

74．What can we infer from this passage?

       A．The technology had been put into use before 2006．

       B．It will be several months before the technology comes into daily use．

       C．Quite a few experiments have been carried out for the technology．

       D．The two robotic arms couldn't pick up their target objects．

75．What's the purpose of the research project?

       A．To help the disabled people to move and speak．

       B．To help the brain-computer system to control a computer mouse．

       C．To help the disabled people use brain activity to serve themselves a drink．

       D．To help the disabled people to get movement like their arms and legs again．

I began to send my first e-mail when I was 17．I discovered Google 5 years later．Now, I use the Internet all the time．Internet has become so popular that 90 percent of 12-to-17-year-olds in the United States use the Internet, according to one recent survey, and about half of those kids use it every day．They visit chat rooms and send e-mails．They go to Websites to get information for homework．

“Kids are now living in a virtual（虚拟的）world,” says Greenfield, “As the Internet is becoming more and more important for our life, we should worry about one question: Is the Internet good or bad for kids?”

“It’s X to answer the question because the Internet involves so many things,” says Justine, a media expert at Northwestern University．“They include networked computer games, news about politics, instant messaging and e-mails to your grandmother.” So, more and more studies shows that the online world can be helpful in some ways and dangerous in others．

 “Although it’s not easy to tell whether it’s good or bad,” says Justine, “the Internet, at least, is very useful and can be used widely by everyone in the world.”

1．What percentage of American 12-to-17-year-olds use the Internet every day?

  A．About 45%                                     B．About 50%

  C．About 80%                                     D．About 90%

2．Greenfield _______.

  A．is an expect from Northwestern University

  B．wants to stop all the kids from using the Internet

  C．is worrying about whether the Internet is good or bad for kids

  D．thinks that the Internet is good or bad for kids

3．“X” in the passage should be the word “_______”.

  A．possible              B．difficult            C．easy                  D．good

4．Which is the best title of the passage?

A．Don’t Use the Internet                   B．Kids and Emails

C．Is the Internet Good or Bad                D．Two Experts from Universities

High Speed Book Scanner
Simply turning pages of a book quickly may not seem like the best way to scan it. A Japanese research group at Tokyo University has created new software that allows hundreds of pages to be scanned within minutes. Scanning text is normally a boring process with each page having to be inserted into a scanner, but the team led by Professor Masatoshi Ishikawa uses a high speed camera that takes 500 pictures a second to scan pages as they are turned by workers.
Normal scanners can only scan the information that is actually before them on the page. This high speed book scanner uses a camera that captures pages at 1000fps as they are turned. A system built in allows it to automatically correct any changes to the text due to the page bending as well as light differences due to shadows. “It takes a shot of the shape, then it calculates the shape and uses those calculations to film the scanning,” Ishikawa said, explaining the system used to reconstruct the original page.
The current system is able to scan an average 250-page book in a little over 60 seconds using basic computer hardware. While it now requires extra time to process the scanned images (影像), the researchers hope to eventually make the technology both faster and much smaller. “In the more distant future, once it becomes possible to put all of this processing on one chip (芯片) and then put that in an iPad or iPod, one could scan just using that chip. At that point, it becomes possible to scan something quickly to save for later reading,” Ishikawa said.
Being able to scan books with an iPhone may be further off, but Ishikawa says that a commercial version of the large-scale computer based scanning system could be available in two or three years. While the technology has the potential to take paper books into the digital age, it remains to be how publishers will react to people scanning their books while just turning pages quickly.
【小题1】According to the passage, the advantage of the new scanning software is that ______.

I have been using the Internet since I was five years old, when my dad first sat me down in front of a computer and connected me the World Wide Web.

I’ve always felt like a master of the Internet world. AOL Instant Messaging, MSN, Gmail, Facebook, Myspace -- I’ve got it all under control. I thought there was nothing more to it besides checking my e-mail and wasting my time, until I was introduced to electronic commerce(e-commerce): business on the Internet.

Some online businesses are run from one-room home offices. Others have hundreds of employees (雇员) across the world. Have you ever heard of Amazon.com, Yahoo.com?

My friends often said they got cheap textbooks off Amazon.com, or had a good deal (交易) on Steve Madden shoes that were on sale at SteveMaden.com. Unfortunately for me, I continued my “e-commerceless” Web-surfing, not knowing about all the deals I was missing out on.

That is, of course, until my sister finally sold the idea to me.

“Why are all these packages arriving in the mail for you, Katy?” I asked her one day. Strange envelopes (信封) had been put on our doorstep for weeks now, each one always addressed to my sister; and we all know little sisters should never be getting more mail than their elders!

“Oh, it’s the things I ordered online!” she answered. I watched speechlessly as she opened them. There was no way our parents were letting her spend that much money- online or off!

“How much did all of this coat?”

“Oh, only about $15 in all!” She said excitedly. “Everything on eBay is on sale! It’s a way better than going to the mall.”

I felt as if there had been a store right in my backyard that I had never walked into! That week, I ordered a used Spanish textbook for my summer course online for 10 percent of the publishing price. A few days later, I bought an iPod protector and a book or two via the wonderful eBay.com.

1.From the first two paragraph we can conclude that the author        

2.The writer didn’t find out about e-commerce until       

3.We can infer from the last paragraph that the author       .

4.What’s the purpose of the article?