問題詳情

Art Fry was a researcher in the 3M Company. He was bothered by a small irritation every Sunday as he sang in the church choir. That is, after he   16   his pages in the hymn book with small bits of paper, the small pieces would invariably fall out all over the floor. One day, an idea   17   Art Fry. He remembered a kind of glue developed by a colleague that everyone thought   18   a failure because it did not stick very well. He then coated the glue on a paper sample and found that it was not only a good bookmark, but it was great for writing notes. It would stay in place   19   you wanted it to. Then you could remove it   20  damage. The resulting product was called the Post-it, one of 3M’s most successful office products.
16.
(A) marked
(B) tore
(C) served
(D) took

參考答案

答案:A
難度:適中0.68
統計:A(17),B(2),C(0),D(5),E(0)

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