In the new century, people use “smart clothes” not only for covering their bodies, but also for many other kinds of uses. Some kinds of smart clothes come into the market. A German clothing maker invented the “MP3 blue jacket”. 【小题1】 An English company (公司) developed a cloth keyboard, they put it onto your pants. 【小题2】 If it gets dirty, you can wash it and make it clean.

It’s known to us that technology improves day by day. 【小题3】 Scientists are developing clothes that can show your body temperature and heat you up before you feel cold. Other smart clothes to wear are special medical ones. 【小题4】 This technology can also provide important information about your environment. Shirts can warn you of serious pollution. Jackets with GPS technology can keep you from getting lost.

People begin to love the idea. 【小题5】 Maybe smart clothes will be common on Paris streets one day, even in your home.

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In the 1790s, a Frenchman invented the world’s first bicycle. It had no pedals, so people had to use feet to ride it. It also had no handlebars, so people couldn’t steer it-they could just go straight (径直地) ahead.

In 1817, Baron Karl, from Germany, invented a new kind of bike. The bicycle had a seat, two wheels and handlebars. But it had no pedals, either. Again, people would use their feet and push while the wheels were moving on the ground.

In 1870, the Englishman James Starley made a bicycle with a large front wheel and a small back wheel. The front wheel was as high as the rider’s leg length. Such bicycles were dangerous because if riders were to stop, they could fall back. Also, it was dangerous to go down a hill.

The first bicycle with a chain appeared (出现) in 1874 in the UK. The bicycle was made up of (由……构成) two wheels of the same size and a chain on the back wheel. It was called the safety bicycle. It started to be popular in the late 1880s, and is now the most common type of bicycle.

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When we think of paper, we think of newspapers and books. But there are many other uses. Only half of the world's paper is used for books and newspapers.

Paper is very good for keeping you warm. You have perhaps seen homeless men sleep on a large number of newspapers. In Finland, it is sometimes-40℃ in winter. The farmers wear paper boots(靴子)in the snow. Nothing could be warmer.

Each year, more and more things are made of paper. We have had paper cups and plates for a long time. But now we hear that chairs, tables, and even beds can be made of paper. Besides paper boots and shoes, you can wear paper hats, paper dresses, and paper raincoats. When you have used them once, you may throw them away and buy new ones.

The latest use of paper seems to be paper houses. These are not small houses for children to play in, but real, big houses for people to live in. You can buy a house with three rooms for about 500 dollars. You can put it up by yourself in a few hours, and you can use it for about five years.