quite a lot of people are busy studying them. All around us are birds, animals, trees and flowers. The facts about 2.________ they live and grow are as interesting as anything

could be. Do you know that one of the great presidents of the United States 3 ________ hours and hours studying birds? A businessman who lives near New York City became so interested in

insects(昆虫) that he began to collect them. He now has more than one thousand different kinds 4. ________ kept in the glass boxes. Come then with me, and I will help you find some of Nature’s

secrets. Let us go quietly through the woods and fields. Here we shall find how a rabbit tells the

other rabbits that there is danger. We shall follow a mother bear and her young ones as they search

for food and get ready for 5. ________ sleep. We shall watch bees 6. ________ in the air to let

other bees know where they can find food. I will 7.________ you many other interesting things,

but the 8. ________ thing that I can teach you is to keep your eyes and ears 9.________ when you

With this, he walks away, shows the photo to a second 5.________, and says: "I know that face."

The second officer looks at the 6. ________ and asks where Mr Hill has come from. When he

hears that Mr Hill has arrived back from Paris, the 7.________ officer smiles and says: "An

Englishman with a beard stole a painting in Paris on Friday, And that man looks just the kind of

man..." 8.________ it comes to the first officer who Mr Hill is. He returns to him, and asks: "Did

you9. ________ at the No.2. High School?" When Mr Hill answers, 10. ________, that he did, the

first officer smiles and says: "I thought so. I'm Jack Smith. You taught me French. You haven't

always 2._______ questions and trying out new ideas. No matter 3._______ hard it

was, he never gave up.Young Tom was in school for only three months. His teacher

didn’t understand why he had 4.________ many strange questions. Most of them were not

about his lessons. The teacher didn’t want to teach Tom any 5.________ . He asked Tom’s

mother to take the boy home. Tom’s mother taught him to read and write, and she found

him 6.________ a very good pupil. He learnt very fast and became very 7.________ in science.

One day , he saw a little boy 8.________ on the railway tracks at a station. A train was

coming near quiclly, and the boy was too frightened to move. Edison rushed out and

carried the boy to 9 .________. The boy’s father was so 10.________ that he taught

night. Dreams are like short films. They are usually in colour. Some dreams are 3. ________ old

films. They come to us over and over 4. ________. That may be because the dreamer is worrying

about something. Dreaming may be a way of trying to find an answer. Some people get new ideas

5. ________ their work fromdreams. They may have been 6. ________ about their work all day.

These thoughts can carry over into dreams. Sometimes we 7. ________ with a good feeling from a

dream. But often we can't remember the dream. Dreams can disappear (消失) 8. ________ from

memory (

记忆). Too much dreaming can be harmful (有害的). The 9. ________ we sleep, the

longer we dream. The mind is hard at work when we dream. That is 10. ________ we may have a More than seven hundred years ago, the Prince of Wales had a very big and brave dog

called Gelert.

One day the Prince wanted to go 1. ________ with his men. He told his 2. ________ to

stay at home and look after his baby son. The baby was in a wooden cradle (摇篮), which

was like a small bed. When the Prince came back from hunting, Gelert ran out to meet his master. He wagged his tail and jumped up to put his paws （前爪）on the Prince's chest. Then the Prince

saw the blood on Gelert's jaws and head.

"What have you done?" the Prince said. He rushed into his house and 3. ________his baby

son. The cradle was lying on its side on the floor. The clothes were torn and there was blood on them. "So you have killed my son?" the Prince said angrily. "You unfaithful dog!" He took out his sword（剑） and 4. ________ the dog. Just as Gelert was 5. ________ , he

managed to bark. Then the Prince heard a baby call to the dog. The Prince ran out of the house and

saw his son lying on the ground unhurt. Near him was a dead 6. ________. Then the Prince knew

that Gelert had defended（保卫） the baby and killed the wolf. The Prince ran 7. ________ into

the house but he was too late. Gelert was dead. The Prince was very sad indeed. 8. ________ ran

down his face when he realized 'he had killed 9. ________faithful friend. The Prince carried the

body of his brave dog to the top of a mountain and buried him there. After this, the Prince never smiled again. Every morning at dawn, he walked up the mountain and stood by the dog's grave for

a few minutes.

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Satellites Forecast the Weather.Now satellites are helping to forecast (预报) the weather.

They are in space, and they can reach any part of the world. The 1.________ take pictures of the