Nature is amazing! Take a close look at the world of insects, and you’ll discover many unbelievable things. Consider butterflies (蝴蝶), for example. They have beautiful wings and magical flying skills. On summer days, you always see them flying freely over flower gardens and wild fields.
But did you know how butterflies become the flying insects? It is one of the wonders of nature. In the beginning, the mother lays a small and colourful egg on a leaf or stem of a plant. It is hard to believe that the egg will become something completely different in a few days. It becomes a walking insect. This insect is called a caterpillar. It now has legs, eyes and a large body. A new life begins. The caterpillar can eat, walk and see. But it is still not a butterfly.
Soon, after growing big, the caterpillar makes a cover for itself. It covers itself in the nice protective blanket (保护层) and goes to sleep. This is known as the “pupa (蛹)” stage. After some time, the blanket breaks and a wet butterfly appears. It now has six legs, a mouth, eyes and wings. Shortly, the beautiful butterfly spreads (张开) its wings and flies away. After a few weeks, this butterfly lays her eggs, and the cycle (循环) begins all over again.
This is just one example of the wonders of nature. Look around the natural world, and you will learn many truly amazing things.
【小题1】What is NOT mentioned about butterflies in Paragraph 1？| A．They are a kind of insect. | B．They have beautiful wings. |
| C．They are good at flying. | D．They can smell well. |
| A．毛虫 | B．雏鸟 | C．飞蛾 | D．蝴蝶 |
①It becomes a pupa. ②It becomes a walking insect.
③The mother lays an egg. ④It spreads wings and flies away.
| A．①→②→③→④ | B．①→②→④→③ |
| C．③→②→①→④ | D．③→②→④→① |
| A．It has legs, ears and a mouth. | B．It has legs, eyes and a large body. |
| C．It has six legs, a mouth, eyes and wings. | D．It has legs, a mouth and a large body. |
| A．One Insect, Many Colours | B．One Insect, Four Lives |
| C．The Kinds of Butterflies | D．The Habits of Butterflies |
