Many objects that people use each day started with a simple idea. These objects have often

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．commonB

(答案→)B 解析：本文是一篇记叙文。通读短文可知，本文讲述的是H.L. Lipman 如何从日常生活中发明带橡皮头的铅笔的故事。短文第一句话就表明本文将要讲述的话题是how objects we use today came from simple ideas，然后通过讲述 H.L.Lipman发明带橡皮头的铅笔的故事来说明。文章隐含着教育意义；在日常生活中要做有心人，善于细心观察，开发自己的创新能力。【小题1】本题的选择要注意上下文。四个选项均为动词，语法上都可填入，但文章说的是影响我们的生活和工作话题，即这些发明的东西改变了我们的生活方式，故选B.【小题2】本题四个选项均为副词，但根据上下文可知：新发明是为了解决问题，使得做事情更容易，所以A符合语境。【小题3】本段开始叙述H.L.Lipman的发明，讲述他是如何有这个注意的H.L.Lipman，的发明是观察中思考所得，而不是先有目标，故不能选B.【小题4】从语法上看，本题四个选项均可做连词用，但从语义上来说这里是承接关系，必须用and来连接三个宾语:pencil, paper, eraser故选B.【小题5】从上下文可知，写作时他需要修改。【小题6】这样他就经常需要在书本下把橡皮找出来。本题同时考词义辨析，四个选项都与“看有关，但只有表示“找出，找到。”【小题7】“我想让橡皮固定在一个地方（place）（便于寻找）”这是H.L.Lipman的想法。【小题8】这个地方当然是在笔头上最方便了，所以H.L.Lipman在铅笔的一端刻出(cut)一个凹槽了【小题9】他考虑到别人也需要这种铅笔，就把自己的设计（design）出售了。【小题10】（因为他的设计被出售）很快这种带橡皮头的铅笔就普及。

就是这个解释