問題詳情
<3>Suppose you took a walk in the woods one autumn morning. After you had enough ofthe cold fresh air, you returned home with numerous burs 26 to your woolen pants.Then what would you do? You would probably, like most people, spend some timeremoving those burs from your pants, complaining what a real nuisance they are. Yet, thisis not the case with George de Mestral. 27 at how stubbornly the burs clung to hispants, he closely examined one of them under a microscope and found it covered withprickles or little hooks. Later, he 28 his accidental discovery of the hook design tohis invention of Velcro, a fastening material. Mestral was not the only person who gotbrilliant ideas from nature. 29 , many other inventors are looking for what they canlearn from Mother Nature, the best engineer of all, 30 designs should not be takenfor granted, but rather be appreciated as a great source of invention.
【題組】26.
(A) stick
(B) sticking
(C) stuck
(D) to stick
參考答案
答案：B
難度：適中0.47619
統計：A(2),B(10),C(3),D(4),E(0)