C

    There are many new ways of shopping in the world. Do you know all of them?

    One popular way is catalog shopping(目录购物). There are catalogs for almost anything you need—like clothes, furniture, cooking and so on. People also order about 40% of their music from music club catalogs.

    Another way of shopping is shopping by TV. It began in 1986. About 5% to 8% of the Americans now shop by television. People say that it is easier than shopping in a shop. TV shopping is late at night, so people can "go shopping" happily after a day's work.

    Computer shopping or "shopping online" is interesting to more and more people. Is computer shopping the way of tomorrow? Already, people can use their computers to order many different things, such as computers, flowers, food and T-shirts. Soon people may be able to shop for anything, anytime and anywhere in the world.

课内阅读

海底动物各有各的特点。海参靠肌肉伸缩爬行，每小时只能前进四米。梭子鱼每小时能有几十千米，攻击其他动物的时候，比普通的火车还快。乌贼和章鱼能突然向前方喷水，利用水的反推力迅速后退。有些贝类自己不动，但能把在轮船底下做免费的长途旅行。还有些深水鱼，它们自身就有发光器官，游动起来像闪烁的星星。