Look at the sky. It's blue.

根据短文内容，选择正确答案。

    Computers are useful machines. They can help people a lot in their everyday life. For example, they can help people save much time, and they can help people work out many problems they can't do easily. Our country asks everyone to learn to use computers except the old people.

    Today more and more families own computers. Parents buy computers for their children. They hope computers can help them improve their studies in school. Yet many of the children use computers to play games, to watch videos or to sing Karaoke, instead of studying. So many teachers and parents complain (抱怨）that computers cannot help children to study but make them fall behind. So these parents lock computers in the boxes.

In some other countries, even some scientists hate computers. They say computers let millions of people lost their jobs or bring them a lot of trouble.

Will computers really bring trouble to people or can they bring people happiness? In fact, people can decide it by themselves.

材料一：左图为吉林省行政区地图，右图为长春市气候资料图。

材料二：按照国际研究，最美雪花形成的条件是温度在-15℃左右，没有强风，且空中水汽充分。飘落的雪花往往形态丰富，大而精美。

材料三：洮南市是中国一个重要的辣椒生产地和集散地，韩国从中国进口的辣椒中，大多数来自这里。近年来，洮南辣椒加工产业迅速发展，辣椒酱成为洮南当地重要的初级辣椒加工产品之一。下表为辣椒生长期间主要农事安排。