"New Glass" is a text in the first volume of the fifth grade Chinese of People's Education Press. It is the first volume of the fifth grade Chinese of People's Education Press 1 1 lesson. The author is Zhou and the reader is.

This text tells the characteristics and uses of some new types of glass. Glass can be seen everywhere in our daily life. With the rapid development of science and technology, various new types of glass with unique functions emerge one after another, creating one miracle after another.

original text

Late at night, from a museum displaying precious calligraphy and painting, an alarm suddenly came. The police came at once and caught a suspect who tried to steal the exhibits. You may not believe it, but the broken glass didn't call the police! This is a special kind of glass with a very fine metal mesh inside.

The barbed wire is connected to the power supply and the automatic alarm. The suspect cut the glass and hit the barbed wire, and the alarm sounded. This kind of glass is called "wire mesh anti-theft glass" and can be used in museums, banks, jewelry stores and buildings where important drawings and documents are stored.

Another kind of "wired glass" is not used for theft prevention. It's hard, and it's still safe after being hit hard. Even if it is broken, the fragments still stick together and will not hurt people. Some countries stipulate that high-rise buildings must use this safe and reliable glass.

There is also a "color-changing glass" that can reflect sunlight. When the building is fitted with this glass, you can see clearly from the inside, but you can't see anything from the outside. Color-changing glass will also change the depth of color with the intensity of sunlight and adjust the indoor light. So people call this kind of glass "automatic curtain".