Many objects that people use each day started with a idea. These objects have often changed the way we 46. Some help us to do a job more47. Others fill a need or solve a problem.
In 1858, Lipman had such an 48. He took out a pencil, a piece of paper,49an eraser. Then he began to write. Sometimes he needed to50a word. Each time he had to search under his books and papers to51the eraser. “ I wish my eraser would stay in one52!” he said.
Then Lipman had his idea. He53a groove(凹槽) in one end of the pencil. He glued(粘牢) the eraser into the groove. Lipman had solved his problem. Later he thought that others might like to have such a pencil. So he sold his54.Some pencils with erasers were55. His design earned $ 100000.
小题1:A．studyB．liveC．sleepD．walk小题2:A．easilyB．correctlyC．carefullyD．normally小题3:A．articleB．aim C．ideaD．action小题4:A．soB．andC．butD．as小题5:A．spellB．readC．writeD．change小题6:A．lookB．seeC．watchD．find小题7:A．placeB．deskC．bookD．hand小题8:A．markedB．preparedC．cutD．invented小题9:A．booksB．pencilC．designD．eraser小题10:A．wonderfulB．expensiveC．colourfulD．common