2. 开学初，你应该对这学期的学习做一个详细的规划。

At the beginning of this term ， you should your study ________ ________ ________ ________ ________. 

1. 这本书是25年研究的结晶。

This book is_____________________ 25 years of research.

5. In art class， children like to use different c______ to draw beautiful pictures.

4. Now some hard and dangerous work is usually done by r______ .

3. —Mom ， can I walk to my grandparents'home?

  ―Don't be s______ . It's much too far.

2. —Why not try the other key?
  —That's a good t_____.

1. Fax machine was a wonderful i______  at that time.

(Tom and David are visiting the Science  Museum.)

Tom ： Wow!There are so many great inventions in the history. 

David：Yes,but I know little about the inventions. 

Tom: Don't worry. I can help you. 1 

David;Good idea！ 

Tom ： Look ， a light bulb ！ 

David;Yeah. 2

Tom ： It was invented by Thomas Edison. He invented over two thousand things

all his life. 

David ： 3

Tom ：I agree with you. From then on， 4

David ：Tom,there are some pictures of the car ， the airplane and the telephone on the wall. Do you know when the airplane was invented?

Tom ： 5

David ： I've really learnt a lot from you ，Tom. Thanks ！ 

Tom ： You're welcome ！

A.  Let's go to the Asian show.

B.  It was invented in 1903.

C.  Do you know who invented it?

D.  the bulb made it possible for people to work at night.

E.  What about going to the European Show first?

F.   Do you know what it was used for?

G. He was really a great inventor.

1.______ 2._______ 3._______

4,______ 5._______

5. The radio was invented by Guglielmo Marconi in 1895.(改为主动语态）

Guglielmo Marconi _________  _______       in 1895.

4. This kind of cloth is usually used for making tents.(同义句转换)

This kind of cloth is usually used_______ ______ tents.