問題詳情

請依下文回答第 5 題至第 9 題     On the long list of happy 5 in science, some discoveries prove to be more monumental than others.Stephanie Kwolek’s was just such a landmark. In the mid-1960s, Kwolek was working at Dupont, 6 a newsynthetic fiber to use in tires. She noticed that one mixture of a polymer and a solvent looked different. 7 assumingshe’d made a mistake, she was 8 and followed up on her observation. When her formula was spun into fiber, itproved to be five times as strong as steel. With its unusual protective powers, it is used in bulletproof vests, bodyarmor and workers’ gloves, which helped to save lives and avoid cuts. It has also been used to 9 items fromboats and cookware to wind turbines and cell phones.
5
(A) accidents
(B) exports
(C) farces
(D) segments

參考答案

答案：A
難度：非常困難0
統計：A(0),B(0),C(0),D(1),E(0)

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