《2025年点石成金金牌夺冠八年级英语上册外研版辽宁专版》

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①Did you know that some of the most useful things we use every day were actually invented by accident? Accidental inventions have changed our world in surprising ways. Let's take a look at three of these inventions!
②In 1928, British scientist Alexander Fleming returned from holiday, and he noticed something unusual about one of the dishes in his experiment. The dish was full of one group of small living things, except for one area. They stopped growing where there was a mold(霉菌) called penicillin. This led to the invention of penicillin, one of the most helpful medicines to this day.
③In 1886, an American named John Pemberton was trying to create a painkiller(止痛药). He added soda water to his medicine by chance. After tasting it, he decided to make advertisements for this drink as a soft drink instead of medicine, naming it "Coca - Cola". Since then, Coca - Cola has turned into one of the most successful companies in the world.
④Percy LeBaron Spencer was not even trying to invent anything when he formed the idea of a microwave oven (微波炉). Working at Raytheon Company during the 1940s, Spencer noticed his chocolate in his pocket got soft from the machine's radiation(辐射). After testing the effects with other food, Spencer realised that this effect could be used to cook food, so the microwave oven was born.
⑤Accidents happen, but sometimes they lead to amazing inventions! So, next time you make a mistake, remember it might just be the start of something great.
( )13. Why does the writer ask a question at the beginning of the text?
A. To list some facts about accidents.
B. To call on people to make mistakes.
C. To introduce the topic of the text.
D. To ask about the readers' experience.
()14. What can penicillin do?
A. It can help clean the dishes.
B. It can kill small living things.
C. It can grow into small things.
D. It can help living things grow.
()15. How did Spencer invent the microwave oven?
A. By noticing the change of chocolate.
B. By doing experiments on machines.
C. By cooking different kinds of food.
D. By inventing some special radiation.
()16. ◆新考法·文章结构◆What is the structure of the text?
A. ①②/③④/⑤
B. ①/②/③④/⑤
C. ①/②③④/⑤
D. ①/②③④⑤

答案： 13.C 14.B 15.A 16.C