Passage 1
学霸导读 条形码在生活中似乎随处可见，很大程度上为我们带来了便利，这便是科技的力量。但你知道它的发展历程吗？
Have you ever noticed the black and white bars on a book? Do you know what they are used for?
They are barcodes （ 条形码 ） used in most products. If you go to a supermarket， you can see almost every product with a barcode o 1 it. Barcodes contain information about the product， such as the name and the production date. It’s an e 2 and convenient way to know about the products. Just scan （ 扫描 ） the bars with a barcode reader and everything is c 3 .
The f irst use of a barcode in a supermarket checkout system was on a pack of American Wrigley Company chewing gum in 1974. Beyond supermarkets, barcodes are n 4 everywhere: for renting cars, for luggage checks on a plane, for parcels you send; life would be rather diff icult w 5 barcodes. Most of our things would get lost in the post.
Barcodes change as well. Barcodes in the past were 1-D, but now there are 2-D barcodes, such as QR codes. Since 2009, QR codes have been used on Chinese train tickets. People can enter stadiums, cinemas and theaters by h 6 certain types of barcodes.
If you f ind these barcode things boring, a barcode building might be more up your street. In St. Petersburg, Russia, there is a building designed like a barcode. It l 7 strange, but it’s actually a shopping mall. There are games, too. Barcode Monsters is a mobile phone game. You have to scan barcodes and f ind the monsters!
1.__________2.__________3.__________4.__________5.__________6.__________7.__________
高频词汇
contain /kən'teɪn/ v. 包含，含有
convenient /kən'viːniənt/ adj. 方便的，便利的
checkout /'tʃekaʊt/ n. 付款台，付款处
beyond /bi'jɒnd/ prep. 除……之外；超出
rent /rent/ v. 出租
luggage /'lʌgɪdʒ/ n. 行李
parcel /'pɑːsəl/ n. 包裹
rather /'rɑːðər/ adv. 相当
stadium /'steɪdiəm/ n. 体育场