Do you know why different animals or insects have their own 【小题1】? Because they can use different colors to keep themselves 【小题2】.

Some birds 【小题3】 on insects, but it’s not easy for them to catch locusts (蝗 虫). Why? It is because locusts change 【小题4】 colors together with the change of the colors of the crops. When crops are green, locusts look green. When crops are brown, locusts change to the 【小题5】 color. Some other insects have to 【小题6】 only at night. It is because they have colors different 【小题7】 plants and birds can find them easily and eat them.

If you study the animal life, you’ll find the main use of coloring is to 【小题8】 themselves. Tigers, lions and other animals move quietly through forests. The small animals cannot find them 【小题9】 they have the colors much like those of the trees and grass.

Do you like exercising? Do you know about tai chi (太极)? Tai chi is a symbol of Chinese culture. Chinese people 【小题1】 it many years ago. Tai chi is one of the 【小题2】 activities. As far as I know, tai chi is not only popular with people in China but also it is 【小题3】 by over 100 million people in more than 150 countries.

Tai chi is a mix of breathing, meditation and slow movements. As you make your movements, you breathe 【小题4】 and naturally. This helps us to relax 【小题5】 from pressure.

Bert, a young 【小题6】 learner, says, “【小题7】 the 20th century, people all over the world have paid a lot of attention to Chinese culture. I started learning tai chi when I was twenty years old. It is fun exercise, easy to learn, and you don’t have to be good at it. I love the 【小题8】 of calm I get from it.” You can either join a tai chi club or learn from a teacher. You can also take the 【小题9】 class and try tai chi at home. It’s a perfect way to make you stay peaceful. Although the movements seem very easy, they still have a big influence 【小题10】 your body and mind. Maybe this is the spirit of tai chi.

We wear shoes every day to 【小题1】 hurting our feet. We can buy shoes in many places, for example, in the supermarket, in the store or at the 【小题2】. But maybe most of us don’t know about the 【小题3】 of shoemaking because now most shoes are 【小题4】 by machines. Here I will tell you how to make a pair of shoes.

The first step is drawing a design (设计图样). Next the shoemaker will use paper to make a pattern. Then the shoemaker draws the pattern on some 【小题5】 like leather (皮革). After that, he cuts the leather with 【小题6】 and then he will sew (缝) and glue the leather pieces together.

Then the shoemaker connects the pieces to the insole. The insole is the part of the shoe that touches your feet. Next, the shoe is 【小题7】 to make the leather soft so it can be shaped. Then the shoe goes in an oven. This helps it to keep its 【小题8】. At the same time the shoemaker works on the lower parts of the shoe. They are 【小题9】 the outsole and heel. When all the parts are ready, the shoemaker glues and sews them together. After these steps, a pair of shoes is 【小题10】.