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河南登封市2017高考英语完形填空一轮练习及答案


河南登封市 2017 高考英语完形填空一轮练习及答案 2016 高考完形填空训练题。 阅读下面短文.从短文后各题所给的四个选项(A、B、C、和 D)中,选出可以填入空白处的最佳选项, 并在答题卡上将该项涂黑。 We all like a sweet treat. But sugar can be too much of a good thing. That's why a lot of and cakes, contain artificial (人工的) sweeteners. The first one was actually a tasty Constantin Fahlberg was _ 43 cleared away the mess but the at work in his lab when a beaker (烧杯) of chemicals 45 chemicals spilled all over his 46 47 41 , such as bread 42 . In the late 1870s. 44 tipped over. He . Without hesitating to wash, 48 50 on his Fahlberg went on with his work. When he went home to fingers. Sitting down at the table with his , the chemical remains was 49 hands, Fahlbcrg began his meal. When the chemist into a piece of bread he'd picked up, it tasted strangely 51 . It wasn't the bread. It was something on his hands that got onto the bread. But 52 ? Fahlberg rushed back to work. He tasted everything in not exactly the chemicals in the lab. Eventually, the chemist beaker that had spilled was sweet-much sweeter than sugar. He artificial sweetener. Dirty? delicious! If this 56 53 , but they were 54 what he was looking for: The matter in the 55 his discovery saccharin (糖精) , the first shows us anything, it's that we all make mistakes, and that's not 57 . Mistakes often take us in new 58 and help us invent new things. People who say something is impossible aren't always right. A lot of things were “impossible” before someone 59 how to do them. If you don't 60 41、 A、 food 42、 A.


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