阅读理解。
An American housewife was pushing her shopping basket through a supermarket with one hand.
With the other hand she was holding on to her small child.She arrived at the checkout counter, saying
to herself, "Now another 20 minutes." But her bill was ready in 20 seconds.
Twenty seconds? Yes,a new machine is doing the job.It reads astampof black and white lines on
each can, box or bottle. These little lines give the computer all the information it needs: the kind of
products,the price and the tax. The girl at the counter simply moves the goods along the front of the "eye"
of the machine. And the bill is ready In no time.
The machines now used in 20 supermarkets in the United States save a lot of time and money, And
they don't make as many mistakes as people do. Some shoppers,however,are complaining that they
cannot read the prices of the goods. All they can see are little black and white lines. The prices are on
theshelves but they want them on the goods.Many people are not sure whether the expensive new
machines are honest shopkcepers!
1. What did the housewife mean by saying"Now another 20 minutes"'?
A. She had waited 20 minutes in front of the counter.
B. She would spend 20 more minutes selecting goods.
C. The bill could be ready in more than 20 minutes.
D. Shc had to wait anottaer 20 minutes.
2. What does the word "stamp" mean in this story?
A. 邮票
B. 标记
C.商标
D. 信誉卡
3.Choose the correct order in which the new maehine does its work.
A. The computer gets the information it needs from the lines.
B. The salesgirl moves the goods in front of the new machine.
C. The bill is ready.
D. The new machine reads the black and white  lines on eachcan, box or bottle.
A. a,b,c,d
B. b,c,a,d
C. d,b,a,c
D. b,d,a,c
4. The passagc might be written ______.
A. years ago
B. recently
C. last year
D. months ago
5. Which of the following is NOT true according to this passage?
A. The new machine makes fewer mistakes.
B. None of the customers like the new machine.
C. With the help of the new machine the shoppers don't have to wait so long for their bills.
D. Many people are afraid that they will possibly be cheated by the new machine.

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