3．Bell invented the telephone and the tetrahedron shape，and neither of them is used today.(　　)

4．Bell's inventions have improved the quality of everybody's life.(　　)

5．Alexander Graham Bell was not a man to rest and he was an inventor all his life.(　　)

答案　1.F　2.T　3.F　4.T　5.T

【话题语篇导读】

Do you have imagination？Do you like to solve problems？Can you？If so，you could be the next great inventor."But I'm just a kid，"you might say！Don't worry about a little thing like age.For example，one famous inventor- Benjamin Franklin-got his start when he was only 12.

So you don't have to be an adult to be an inventor.One thing you do need，though，is something that kids have plenty of curiosity and imagination.

So what should you do if you have what is a great idea for an invention？Talk to a friend or family member about it.Then ask them to help you create a working model-called a prototype of your idea.

Once you have a prototype，you can test it.Sometimes your idea turns out to be not as great as you thought.At other times，though，you realize it is a good idea and your prototype can help you figure out how to make it even better.

If your idea is really a good one，an adult can help you contact companies that might be interested in it.You will also want an adult's help to get a patent for your idea.

[知 识 梳 理]

Ⅰ.核心单词

一、单词拼写

1．The young nurse was swept away by the strong ________(水流)．

2．The famous movie star has been longing for a ________(稳定的)marriage.

3．He gave a positive________(鉴定)of the killer.

4．Be ________(务实的)！We can't afford the car and the vacation.

5．He sees local history as an________(伸展)of family history.

答案　1.current　2.stable　3.identification　4.practical　5.extension