题目列表(包括答案和解析)
I am always eager to do experiments, especially chemistry ones. It's _26_ to work with test tubes and beakers（烧杯） , even though sometimes my efforts end in__27___. Experiments were fun for me __28 a recent accident.
The 29 happened when I was heating a big test tube with an alcohol burner（酒精灯） , chatting to my partner while waiting for__30____ changes. All of a sudden, the tube cracked. Even though I jumped from my seat when I heard the crack, the hair on my forehead was __31____ as I was leaning too close to the test tube.
__32___ I had no time to be sad about my hair: the liquid in the test tube poured onto the table and caught fire. I'd never 33 _ anything so bad! My___34___went blank （空白）for a moment. Then I quickly covered the fire with a damp cloth to__35____.
The teacher told me that the test tube broke in half at the bottom because we didn't dry it properly before __36___ it.
We calmed down and did the experiment, again. But our hearts were still __37____ rapidly even after we walked out of the lab.
But my bad __38___ didn't end there! Since all __39 was focused on the flames while we were in the lab, I didn't see the liquid falling onto my trousers.
During the following class, I felt a __40___ in my leg. Soon it became more and more painful and I touched the area with my fingers, _41_ to make things better. But to my great 42___ , the material of my trousers turned into powder! “Vitrio（硫酸）! ! !”The terrible word came into my mind. I rushed out right away to wash and examine my poor skin. _43_ , it was not a serious injury.
After changing my __44____I sat down and told myself: danger is no joke! It's very important to have a serious___45___ in chemistry class. Doing scientific experiments as a learner is no laughing matter.
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(广东省茂名市第十中学2010届高三第一次模拟)
Scientific experiments can sometimes go wrong and when they do them, results may range from the disastrous to the troubling. One such 21 took place in South America about fifty 22 ago. Whether its 23 consequences will cause serious damage or nothing more than a small trouble still remains to be seen.
The story began in 1956 when an American scientist working in Brazil decided to solve the problem of 24 the productivity of that country’s bees. He imported a very 25 type of African bee from Tanzania and mated（交配） it with the more easy-going native variety to produce a new kind of bees. The new bees worked harder and produced twice as much honey. It seemed that Professor Kerr, for that was the scientist’s name , was entirely 26 .
Then things began to go wrong. For some 27 as yet unseen, but perhaps as a result of something in their environment, the new bees began to 28 extremely attacking personalities. They became bad-tempered and easy to be 29, attacked the native bees and 30 them from their living places.
21. A. disaster B. accident C. incident D. experiment
22. A. days B. weeks C. months D. years
23. A. last B. final C. total D. first
24. A. increasing B. reducing C. making D. controlling
25. A. passive B. active C. native D. primitive
26. A. careful B. grateful C. successful D. successless
27. A. reason B. excuse C. cause D. explanation
28. A. stop B . develop C. accept D. receive
29. A. hungry B. angry C. heavy D. terrible
30. A. took B. drove C. chased D. killed
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