Demon老师首字母秘诀分享【一】：语法(3)
【2013年松江区二模】
Have you ever noticed the black and white bars on a book? Do you know what they are used for? They are barcodes 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 nameand production date. It’s an e__2__and convenient way to know about the products. Just scan the bars with a barcode reader and everything is c__3__.The first 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 parcelsyou send; life would be rather difficult w__5__barcodes. Most of our things would get lost in the post. Barcodes change as well. Barcodes in the past were1-D, but now there are 2-D barcodes, such as QR code. Since 2009, QR has beenused on Chinese train tickets. People can enter stadiums, cinemas and theaters by h__6__certain types of barcodes. If you find 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 find the monsters!
这三篇首字母难度不算太难，但是从技巧上，都是有值得注意的地方，尤其是对语法知识的考察比较集中。
