(   ) 3. These  rulers were  made        the factory.

A. in     B. of C. from     D. by

(   ) 2. We should share our happiness        others.

A. in     B. to C. on     D. with

(   ) 1. If you add          after one thousand，it becomes one million.

A. two zero     B. two zeros

C. three zero     D. three zeros

5. —Could you list some          (  invent) that you know?

—Sure. Zhang Heng,Bi Sheng.

4. You can work out the problem easily when you use your        (imagine ) .

3.—Can you write a          ( detail) report about your invention?

—Certainly. I can.

2. This is a new way of        (  solve) the problem.

1. None of them        (be) right.

5. Many boy children like toy g         ，because they want to fight like soldiers.

4. R         can help us in many ways.