問題詳情

四、綜合測驗：10%Sometimes inventions __31__ on purpose; sometimes, they are not. Here are two inventions that happened __32__ that we are thankful for.Penicillin is an antibiotic drug that fights infections and diseases. Sir Alexander Fleming didn't set out to discover it. One day he was busy __33__ a strain of bacteria __34__ staphylococci (葡萄球菌) and absent-mindedly forgot to clean up his workspace before leaving on vacation. When he came back a week later, he noticed mold (黴) __35__ on his unclean research dishes. He also noticed that the bacteria couldn't grow where there was this mysterious mold. The mold, which he named penicillin, led to modern antibiotics (抗生素).Like Sir Alexander Fleming, Professor Wilhelm von Roentgen made a huge __36__ to medicine incidentally. He taught physics in Germany and __37__ experiments on cathode rays (陰極射線). He also loved to take photographs. One day he went to lunch and left on one of his experiments－a tube as a part of his research on rays. Also on his desk that day was the plate (底片) of a photograph he'd taken that day. When he developed (沖洗) the picture, he saw that in the center of the picture was the outline of a key. __38__, he looked on his desk and saw that image was the same shape __39__ the key he used as a bookmark. He figured out that rays from the tube went through the book and onto the photographic plate. The key however, blocked some rays and so it left the outline. Von Roentgen went on to study and name X-Rays, which have been essential in learning and diagnosing injuries inside the human body.So, if you get sick or break a bone, be very thankful that two men were caught up in other things and had two experiments go not quite __40__.
30. As the clock struck twelve, I found myself ________.
(A) was unable to sleep
(B) had been lying on my bed for one hour
(C) still awake
(D) drift into sleep

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

內容推薦

內容推薦