Where did the concept of feedback come from？（ ）
A: It was invented by Confucius.
B: It was invented by Aristotle.
C: It was invented in World War 2 while working on anti aircraft guns.
D: It was invented to catch fish.
E: It was invented very recently in Alibaba's research centre.
A: It was invented by Confucius.
B: It was invented by Aristotle.
C: It was invented in World War 2 while working on anti aircraft guns.
D: It was invented to catch fish.
E: It was invented very recently in Alibaba's research centre.
举一反三
- Where did the concept of feedback come from? A: It was invented by Confucius B: It was invented by Aristotle C: It was invented in World War 2 while working on anti aircraft guns D: It was invented to catch fish E: It was invented very recently in Alibaba’s research centre
- ---Football______by the British at the beginning of last century. ---That’s probably why football is one of________popular games in England. A: was invented, the most B: invented, more C: was invented, more D: invented, the most
- It's common knowledge that black tea ______ in China more than 600 years ago. A: is invented B: was invented C: invents D: invented
- Invented in China, paper moved out of China, first to Samarkand and then into Europe from the Islamic portals of Sicily and Spain. A: Paper, which was invented in China, moved out of China B: Paper, when was invented in China, moved out of China C: Paper, where was invented in China, moved out of China D: Paper, what was invented in China, moved out of China
- If computers ______, many problems on space flight could not have been solved. A: had not been invented B: are not invented C: were not invented D: have not invented