Inconclusion,inventionshaveplayedakeyroleinshapinghumanhistoryandsociety.Andinventorshavecreatedthegreatinventions.Ifwewanttokeeppushingtheboundaries(界限)ofwhatispossible,itisclearthatourworldneedsmorecreativeandtalentedinventors.(1)Whatisoneoftheearliestandmostinfluentialinventionsaccordingtothepassage?The wheel.(2)...
A. invent B. inventions C. inventors D. invented 相关知识点: 试题来源: 解析 B。“one of + 名词复数”表示“……之一”,选项 A“invent”是动词,选项 C“inventors”意为“发明家”,选项 D“invented”是过去分词,均不符合。选项 B“inventions”是名词复数,意为“发明”,符合语法和句子意思。反馈...
An easy-to-scan alphabetical list of famous inventions and innovations, plus photos and links to additional information, biographies, and timelines.
Inventions Beginning With "A" French aeronauts Jacques Charles (1746-1823) and Noel Robert made the first manned (free flight) ascent in a hydrogen balloon, designed by Charles, a physics professor, and constructed by Robert and his brother Jean. It took off in front of a crowd of 400,000...
In conclusion, inventions have played a key role in shaping human history and society. And inventors have created the great inventions. If we want to keep pushing the boundaries (界限) of what is possible, it is clear that our world needs more creative and talented inventors. ...
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One of the most important inventions is the Penicillin. In 1928, it was accidentally discovered by Alexander Fleming, who noticed that a certain type of mold (霉菌) can actually kill bacteria (细菌). In fact, it was not Fleming who invented the penicillin. However, Fleming saw the potential...
While industrial laboratories contributed such important products as nylon and transistors, independent inventors developed air conditioning, the automatic transmission, the jet engine, the helicopter, insulin, and streptomycin. Still other inventions, such as stainless steel, television, silicons, and ...
One of the most important inventions is the invention of the telephone. The idea behind the telephone is simple. a system which changes sound into a series of electrical impulses of differing frequencies , and then reverses this procedure to recreate the
According to the passage, important inventions of the twentieth century ___.A.are not necessarily produced as a result of governmental support for military weapons research and development.B.came primarily from the huge laboratories of monopoly indust