Nanda sees a wearable computer as a handbag, one that’s built out of four-inch squares and triangles of fabric (织物), with tiny computer chips embedded (嵌入) in it. It looks, feels and weighs like your typical leather purse.
That’s where the similarities end: This bag can wirelessly keep track of your belongings and remind you, just as you’re about to leave the house, to take your wallet. It can review the weather report and suggest that you grab an umbrella. This purse can even upload your favorite songs onto your scarf (围巾).
Sure, a computing purse and scarf set may seem like the stuff of science fiction. But these devices (装置), part of next generation of wearable computers, could become common within a few years. DuPont created new super strong fibres that can conduct electricity and can be woven into ordinary-looking clothes. And the chipmaker developed chip packaging allowing wearable computers to be washed, even in the heavy-duty cycle.
As a result, these new wearable devices are different from the heavy and silly types of the recent past, which often required users to be wrapped in wires and type on their stomachs. Unlike the old types, these new wearable computers also make economic sense. When her bag becomes commercially available in two to three years, Nanda expects it will cost around $150, which is the price of an average leather purse.
Here’s how the bag works: You place a special radio-signal-transmitting chip onto your wallet. A similar radio in your purse picks up the signal and notifies you that you’ve forgotten to take your wallet. In turn, sensors on your purse’s handles will inform the computer that you’ve picked up the purse and are ready to go.
Already, these new kinds of wearable devices are applied in markets like auto repair, emergency services, medical monitoring-and even, increasingly, for consumers at large. Indeed, more people will want to cross that bridge in the coming years—making for a booming market for wearable computers that don’t look like something out of science fiction.
72. Which of the following describes a wearable computer?
A.It can be washed in washing machines.
B.It is much heavier than a leather purse.
C.It can download songs from the Internet.
D.It is made of clothes conducting electricity.
73. According to the passage, the new wearable computers .
A.require users to operate on the stomach
B.pick up the signals through wires and chips
C.are being put to use in some different areas now
D.are smarter but more expensive than the old ones
74. What does the underlined sentence in the last paragraph mean?
A.The new wearable computers have become fashionable.
B.People would like to learn more about the new computers.
C.The idea of the purse-like computers comes from science fiction.
D.New wearable computers promise to sell well in the future.
75. The purpose of the passage is .
A.to introduce a new kind of computer
B.to explain the functions of computers
C.to compare different types of computers
D.to show how high technology affects our life