Greatinventionschangethewaywelive,Thefirstgreatinventio...
问题详情:
Great inventions change the way we live ,The first great invention was one that is still very important today—the wheel. This made _ 61 easy for men to carry heavy things and to travel long distances. For _62 (century)after that, there were few inventions that had as much effect as the wheel. Then in the early 1800’s,the world started to change_ 63 (great) the second half of the 19th century ,many great inventions _ 64 (make)g them were the camera, the electric light and the radio, all of _ 65 _ have become a big part of our life today. The first part of the 20th century saw many great inventions, _ 66_ (include) the helicopter ,movies with sound and the computer was also _ 67 _ time when a new world was made. Men began looking for ways to go into space. Russia and the US made the first step, _ 68_ (follow) by Europe and Japan a has also made great contributions to __69__ (explore) outer space these years, but we still have a long way to go.
New inventions are being made all the time. Who __70_ (know) what the world will be like in the future?
【回答】
61 it 62 centuries 63 greatly 64 were made 65 which 66 including 67 a 68 followed 69 exploring 70 knows
知识点:语法填空
题型:未分类
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已知(1+ɑx)(1+x)5的展开式中x2的系数为5,则ɑ=( )A、-4 B、-...
问题详情:已知(1+ɑx)(1+x)5的展开式中x2的系数为5,则ɑ=( )A、-4 B、-3 C、-2 D、-1【回答】D知识点:计数原理题型:选择题...
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某班抽取6名同学进行体育达标测试,成绩如下:80,90,75,80,75,80.下列关于对这组数据的描述错误的...
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