A robot is a special kind of machine. It is a machine that can follow instructions( 命令).

    1 it is a machine, it hardly makes mistakes or gets tired. And it 2  complains, unless you tell it to!

    Robots are around us. Some robots are used to 3  things. For example, robots can help make cars. Some robots are used to explore(勘察) dangerous places. Some robots can help clean your house. Some robots can even 4  human languages. They can be used to help answer telephone calls. Some robots look like 5 , but most robots do not. They just look like machines.

    Long ago, people imagined 6 . Over 2,000 years ago, Homer, a famous poet, imagined robots. His robots were made of gold, but they were not 7 . Nobody was able to make a real robot at that time. The  8  real robot was made in 1961. It was called Unimate.

    In the future, we will have even more robots. They will do things that we can't do, or that we don't want to do, or that are too 9 for us. For example, robots will help us fight fires and illnesses and 10 things. They will help make our life better.

根据短文内容，选择正确答案。

    Do you know a kind of bird called tawny owl? Where does it come from? It comes from Finland (芬兰). What color is it? It is brown. Are all the tawny owls brown? No. Tawny owls come in two colors: pale gray and brown. And in Finland, it often snowed in winter. Many tawny owls were pale gray. But as the Finnish (芬兰的)winters get warmer, there are more brown ones. Why is that?

    The University of Helsinki team tries to study tawny owls. They find that tawny owls get the color from their parents. The gray owls could get food easily in the snow in the past. But now the winter is warmer. There is little snow so the brown owls can live well, too. The number of the owls is getting bigger.

    The leader of the team, Dr Patrick Karell, said that the birds change their color to meet the weather. We are sure the weather change can do something to the animals.

保持愉快的心情是青少年心理健康的核心，当生活中出现某些烦恼问题时，你认为以下哪种方法不利于调节自己的情绪（　　）