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1.The device was made in response to the desire by a Select Committee to use railway signals on highways.
2.The light was called semaphore.
3.But Knight's invention was not to last long. After only a month of use the device exploded and injured the police officer who was operating the light.
4.Toledo, Ohio in 1908, the arms where eight feet above ground.
5.B
Chúc bạn học tốt!
A)
1:T
2:F
3:F
4:T
5:T
6:F
B)
1.The first electric traffic light was invented in 1912
2.The first electric traffic light was invented by Lester Wire
3.The first electric traffic light did have three colour
4.The lights were first installed in Cleveland, Ohio, at the corner of 105th and Euclid Avenue.
6.In 1920, a Detroit police officer named William Potts added the yellow
Còn 1 câu nữa mà khó quá mik chịu :((
P/S : Good Luck
~Best Best~
The first stamp in the world was an English stamp. It was made in 1840. Before that, people paid money to the postman for every letter that they received and the postman did not give the letters to anybody who did not pay him. An English teacher, whose name was Rowland Hill, thought much about this. One day, he said that the people who wrote the letter should pay for them, and not the people who got the letters. He then spoke about it to the people in the government. Soon the post offices began to sell little pieces of paper with a stamp on them.
1) Which country made the first stamp?
-> English is the country which made the first stamp.
2) When did the first stamp appear?
-> It first appeared in 1840.
3) Before that, what did people have to do when they got a letter?
-> Before that, people paid money to the postman for every letter that they received and the postman did not give the letters to anybody who did not pay him.
4) Who invented the stamp?
-> An English teacher, whose name was Rowland Hill, invented the stamp.
The first stamp in the world was an English stamp. It was made in 1840. Before that, people paid money to the postman for every letter that they received and the postman did not give the letters to anybody who did not pay him. An English teacher, whose name was Rowland Hill, thought much about this. One day, he said that the people who wrote the letter should pay for them, and not the people who got the letters. He then spoke about it to the people in the government. Soon the post offices began to sell little pieces of paper with a stamp on them.
1) Which country made the first stamp?
=> English made the first stamp.
2) When did the first stamp appear?
=> The stamp appeared in 1840.
3) Before that, what did people have to do when they got a letter?
=> Before that, people paid money to the postman for every letter that they received and the postman did not give the letters to anybody who did not pay him.
4) Who invented the stamp?
=> An English teacher, whose name was Rowland Hill invented the stamp.
Reading the following passage and choose the best answer:
Computing is now at the same stage as printing was when the first printing presses were used .Before printing presses were invented , only rich people like kings and dukes could afford to buy books.Often these people were unable to read and hadnt enough time to learn .In any case , the books were so big that it was difficult for anyone to relax with a book as we do today .They wanted booked because they were expensive and there was something magical about them .Only a few people were able to write, and it took an extremely long time to write a book. Monks and other people who could write sail ordinaly people could not learn to read.
The position with computers is very similar today.A few years ago ,computers were very large and expensive.Business managers and rich people ordered them but they didnt know how to use them.In many countries , however, the situation has now completely changed .Lots of people not only own microcomputer but also know how to use them.
Questions :
1)What happened before printing presses were invented?
Before printing presses were invented , only rich people like kings and dukes could afford to buy books.
2)Why were books wanted before printing presses were in vented?
They wanted books because they were expensive and there was something magical about them .
3)What is common feature of a book and a computer?
They were very large and expensive.
4)what situation has thoroughly changed nowadays?
Lots of people not only own microcomputer but also know how to use them.