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閱讀理解

　　Some inventions are so useful, but seem so simple, that we wonder why no one thought of them long ago. Post-it Notes—the pieces of pa per that you can fasten almost anywhere and then remove without leaving any sign that they were there—are an example of such an invention.

　　Post-it Notes were invented about twenty years ago by Art Fry, a scientist at 3M Corporation. The idea for the product came from a frustrating(令人沮喪的) experience he often had while singing in his church choir(唱詩班) . Fry used pieces of paper as bookmarks to mark the places in his book of songs, but these bookmarks were always falling out. He knew he needed a bookmark that would stay where he put it, but that he could remove without damaging the pages.

　　Around the time Fry lard about a new adhesive (粘合劑) that a (同事) , Dr. Spence Silver, had created. This adhesive was special because it was sticky, but not too sticky. It was strong enough to hold papers together, but weak enough not to tear the paper when it was removed. Fry saw that the new adhesive could help solve his bookmark problem. One morning, Fry put some of the adhesive on the edge of a piece of paper. Just as he hoped, it made a perfect bookmark.

　　Fry and some other people at 3M believed so much in the new product that they persuaded the company to give away thousands of the “sticky pieces of paper” for trial use. When some salespeople at 3M went to offices and showed workers just how helpful the new type of notes could be, they immediately received many orders. As more and more people discovered how useful Post-it Notes could be, the product took off.

1．The invention of Post-it Notes showed that Art Fry ________ .

[　　]

A．had a lot of knowledge

B．was very hard-working

C．was good at creative thinking

D．loved his job at the church

2．In what way did Dr. Spence help Art Fry?

[　　]

A．They worked together and 'ten discussed science.

B．His invention of a special adhesive made Fry's invention possible.

C．He persuaded 3M Corporation to give away lots of Post-it Notes for trial use.

D．He co-operated with Fry by providing the new adhesive for him.

3．Which of the following is a possible use of Post-it Notes?

[　　]

A．An email to a friend.

B．An ad in a newspaper.

C．A note on a friend's door.

D．A postcard from abroad.

4．The underlined words“took off” mean ________.

[　　]

A．became popular quickly

B．had even more uses

C．disappeared from the market

D．started to leave the ground

答案：C;D;C;A
解析：

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