Ⅳ.　 In your schoolbags, most of you will have a pencil, some pens, a ruler and some books. These things don’t grow in the fields. They were all made in factories and invented by someone. Thousands of years ago, there were none of these things.

Who invented them? We don’t always know. There have been many inventions, large and small in human history. Most inventors have been forgotten by people. Who invented the clock, or the lock for the door? We don’t know. There have been thousands of inventors and we should thank them for their clever ideas. Will you be one of them when you grow up?

Ⅲ. W: Hello, Bill! I’ve just seen a great TV programme about space. Did you know that scientists have discovered water on Mars?　

M: No! Really? That’s very interesting. Have they tried to find life on Mars?

W: Well, they’re looking for life but they haven’t found anything yet.

M: They’ve already decided that there’s no life on the moon.

W: Yes, that’s right. So far there’s only life on the earth.

10. M: Do you know the year when the first movie was shown?

W: Yes. It was shown on December 28th 1895, two Frenchmen made a twenty-minute show in a place where 33 people viewed the birth of the new invention.

Q: What are they talking about?

9. M: What’s that in your hand?

W: Oh, it’s called English Learning Machine.

M: What’s it used for?

W: It’s very helpful. It’s used for helping us to improve our English.

Q: What’s the English Learning Machine used for?

8. M: There is something wrong with my robot.

W: What’s wrong?

M: It doesn’t work.

W: Why?

M: It has a virus.

Q: What’s wrong with the robot?

7. W: Don’t spend too much time on computers. You may get headaches or sore eyes.

M: OK, I won’t.

Q: Why shouldn’t we spend too much time on computers?

5. Mars is the planet in the solar system that is fourth in order of distance from the sun, and it is a quarter as big as the earth.

Ⅱ. 6. W: I bought a robot yesterday.

M: Oh, really? Where did you buy it, Millie?

W: In a robot shop.

Q: Where did Millie buy the robot?

4. The boy isn’t allowed to watch TV too much.

3. The first cloned animal was a sheep named Dolly.

2. The spaceship without men is mainly controlled by computers.