All American dollar bills（紙幣）weigh the same, they’re the same size, and they’re made of the same material. “There are no physical marks for those with vision（視力）loss, who need an effective means of knowing how much it is, a $1 or a $100?” explains Vencer Cotton, director of technology and training at the Columbia Lighthouse for the Bind in Washington D.C.

NOW there is something that comes pretty close. Meet the iBill, a piece of plastic about the size of a large cigarette lighter. Equipped with one AAA battery, a couple of buttons and a speaker, the iBill is designed to be simple. A narrow opening allows for a U..S. Bill to be placed inside and upon scanning, it will say the amount the bill is worth. However, even though the iBill can do that job for you, it doesn’t mean it’ll tell you if a bill is real or even how much you have.

Created by Orbit Research, it will be the first money reader distributed by the U.S.Bureau of engraving and Printing (BEP). THE BUREAU WILL SOON BE SHIPPING iBills, free of charge, across the country. “It is my No. 1 choice,” Cotton says of the iBill, especially when it comes to sorting money as fast as possible.”

There are actually a bunch of apps（應(yīng)用程序）that can do what the iBill ca, made convenient by the iPhone’s voiceover functions. In particular, EyeNote was also developed by the U.S. BEP to help distinguish bills. Another app, called LookTel, offers recognition for a large number of countries’ bills and VisionHunt distinguishes different kinds of bills and offers many tools to the blind. “But a lot of blind people can’t afford an iPhone,” says Shawn Callaway, president of the National Federation of the Blind of Washington D.C.

1.The iBill was invented to .

A. pay for things at certain shops

B. help children sort out their money

C. help the blind recognize their money

D. tell whether a dollar bill is real or not

2.What can we learn about the iBill?

A. It is unbreakable.

B. It can’t calculate.

C. It can light a cigarette.

D. It costs a lot of money.

3.Compared with other apps, the iBill .

A. is much easier for poor people to accept

B. offers more useful functions to the blind

C. is the only one developed by the U.S. BEP

D. can tell the differences between many foreign bills

4.What is the purpose of this text?

A. To encourage people to help the blind.

B. To talk about American dollar bills.

C. To ask people to buy the iBill.

D. To introduce a hi-tech tool.

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