問題詳情
Post-it was not successful at first. Spencer Silver, one of the inventors of the Post-it note, had tried toinvent a strong glue. Although __27__ with different chemicals, the glue that he made __28__ being veryweak. He wasn’t disappointed; __29__, he tried to make his co-workers believe the usefulness of theweak glue, but they didn’t listen. __30__, Silver’s weak glue drew someone’s attention. When Silver’scolleague Art Fry sang hymns during church services, his bookmark fell out of his hymn book again andagain, __31__ really upset him. One day, __32__ using Silver’s weak glue on a piece of paper might beable to help him mark the right page. Then he returned to the office and shared his thought with others inthe company. The Post-it was born in 1980. Next time you have a problem, try to think of a way to__33__ it.
【題組】27.
(A) he experimenting
(B) experimented
(C) experiment
(D) it experimented
參考答案
答案：B
難度：困難0.375
統計：A(5),B(3),C(0),D(0),E(0)