◎ 题干
Many objects that people use each day started with a simple idea. These objects have often changed the way we  46 . Some help us to do a job more   47 . Others fill a need or solve a problem.
In 1858, Lipman had such an  48 . He took out a pencil, a piece of paper,   49 an eraser. Then he began to write. Sometimes he needed to  50  a word. Each time he had to search under his books and papers to   51  the eraser. “ I wish my eraser would stay in one 52 !” he said.
Then Lipman had his simple idea. He   53  a 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 his  54 .Some pencils with erasers were 55 . 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
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◎ 解析
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◎ 知识点
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