In the new century, people invented some "smart clothes". They {#blank#}1{#/blank#} (use) not only for covering your body, but also for many kinds of uses. Some kinds of smart clothes have come into the market. A German clothing maker has invented the"MP3 blue jacket". This kind of jacket has two functions. It is both an MP3 player {#blank#}2{#/blank#} a mobile phone. Besides, {#blank#}3{#/blank#} English company has developed a cloth keyboard that can be put onto your pants. You can control your computer with it {#blank#}4{#/blank#} (easy) anywhere. The keyboard can be washed {#blank#}5{#/blank#} it gets dirty. And it can be even ironed.

    As the technology improves, smart clothes will become much {#blank#}6{#/blank#} (smart). Researchers are developing clothes {#blank#}7{#/blank#} can show your body temperature and heat you up before you feel cold. Other smart clothes to wear are special medical ones. They can tell the doctor when you are {#blank#}8{#/blank#} danger. This technology can also provide important information about your environment. Shirts can warn you of high pollution levels. Jackets with GPS technology can keep you from {#blank#}9{#/blank#} (get) lost.

    People have begun {#blank#}10{#/blank#} (love) the idea. Probably, smart clothes will be common on Paris streets, and even in your own home one day.

    Over millions of years ago, there were no deserts. Now about three tenths of the Earth's surface{#blank#}1{#/blank#} deserts. The size of the world's deserts is always {#blank#}2{#/blank#} (change). Deserts can be hot or cold. The Australian Desert is a hot desert, while the Gobi Desert in Mongolia is an example of a cold desert. Deserts are dry areas {#blank#}3{#/blank#} less than 50 cm of rain falls each year. The Sahara Desert in Africa receives less than 1.5 cm a year. {#blank#}4{#/blank#} rain doesn't fall very often in deserts, sometimes even for years, there can be heavy rain {#blank#}5{#/blank#}(sudden). Because they are dry, deserts have wide changes in temperature each day. When the sun {#blank#}6{#/blank#}(go) up, it is very hot. At night, the heat {#blank#}7{#/blank#} (receive) by the ground during the day {#blank#}8{#/blank#} (quick) disappears (消失), and then it becomes very cold. Because{#blank#}9{#/blank#}the change, living in the desert is very difficult. Man can make deserts, but they can also stop them from getting larger and larger. Planting trees can prevent the sand from{#blank#}10{#/blank#}(spread).

    Li Hong searched for information a{#blank#}1{#/blank#} how to learn English {#blank#}2{#/blank#} (good) on the Internet last night. She entered some key words into a s{#blank#}3{#/blank#} engine. Then she {#blank#}4{#/blank#} (find) much information. She felt very happy. She thought the Internet was very {#blank#}5{#/blank#} (use).