Many objects that people use each day started with a simple idea．These objects have often changed the way we 　1 . Some help us to do a job more 　2 . Others fill a need or solve a problem.

In 1858 H.L. Lipman had such an 　3 . He 　4　 out a pencil, a piece of paper, and an eraser. Then he began to write. Sometimes he needed to 　5 a word. Each time he had to search under his books and papers to 　6 the eraser. “I wish my eraser would stay in one 　7 !” he said.

Then Lipman had his simple idea .He 　8 a groove in one end of the pencil .He glued the eraser into this groove. Lipman had solved his problem .Later he thought that others might like to have such a pencil. So he sold his 　9 . Soon pencils with erasers were 　10 . His design earned him $100,000.

1．A．study　　　　 B．live　　　　 C．sleep　　　　 D．walk

2．A．easily　　　　 B．correctly　　　　 C．carefully　　　　 D．normally

3．A．article　　　 B．aim　　　　　 C．idea　　　　　　 D．action

4．A．got　　　　　 B．took　　　　　　 C．brought　 　 D．put

5．A．spell　　　　 B．read　　　　　　 C．write　　　　 D．change

6．A．look　　　 B．see　　 　 　 C．watch　　 D．find

7．A．place　　　 B．desk　　　　　 C．book　 　 　 D．hand

8．A．marked　　　　 B．prepared　　　　 C．cut　　　　　 D．invented

9．A．books　　　　 B．pencil　　　　 C．design　　　　 D．eraser

10．A．wonderful B．expensive　　　 C．colorful　　　　 D．common