A。解析:“By the time the first computer was invented”是一般过去时,表示到这个过去的时间点为止。科学家尝试研发计算机是在计算机被发明之前,属于过去的过去,所以要用过去完成时。选项A“had tried”正确。选项B“tried”是一般过去时,不能体现出尝试在计算机被发明之前就已经进行了很久。选项C“have tried”是...
D. The reason why a time machine hasn't been invented.Step3 读后 —— 论深度 解1. If you were the interviewer, what other ques-tions would you ask Dr Richard Fairhurst?(Creative thinking)2. In your opinion, what else inspires people to in-vent things? (Critical thinking)Step4 总—语...
Thus the wheel and the axle came into being, and with them the first carts were invented.The wheel is important because ___. A.it was man’s first real inventionB.nothing was born with a wheel in natureC.every machine depends on it 4 Man’s first roan invention, and one of the ...
Who invented the first flying machine?Question:Who invented the first flying machine?History of Flight:Human achievement of flight through gliders and hot air balloons created the ability to see the world from an elevated point, but flying machines eluded inventors until the early 20th century.Answe...
more productive with AI doing much of the writing for the lawyer. An accountant can be five or ten times more productive, because AI does all the routine number crunching, leaving only the accountant to instruct AI what to do; and customer service can be handled 99 percent by machine with...
根据语境时态是一般过去时,动词要用过去式,发明是invent,过去式是:invented,故答案为:invented。(7)考查形容词。句意:亚历山大•格雷厄姆•贝尔于1876年发明了最早实用的电话之一。根据语境最早实用的practical,形容词作定语,故答案为:practical。(8)考查名词。句意:从那时起,人们就可以远距离交谈了。根据语境over...
When was the first automobile invented? When was the first train invented? When was the first machine invented? When was the first race car invented? When was the first portable computer invented? When was the first dirt bike invented?
metal jacket full of cooling water, allowing it to sustain firing rates as high as 600 rounds per minute for long periods of time. When first introduced, the Maxim gun was designed to use then-standard black powder cartridges; however, it was soon adapted for the newly-invented smokeless ...
a因为他感冒了 所以昨天上午他没来上课 正在翻译,请等待...[translate] a灯在床上吗? Lamp on bed?[translate] athe indians first invented and developed the 1 to 9 system of number 印地安人首先发明了并且开发了数字1到9系统[translate]
Thus the wheel and the axle came into being, and with them the first carts were invented.The wheel was probably invented by ___. A.a group of modem huntersB.a great prehistoric thinkerC.the first man on earth相关知识点: 试题来源: 解析 ...