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THE FIRST ELECTRIC TRAFFIC LIGHTS             In the early 1900s, the world was developing at a very rapid pace, and with the growth of industrialization, cities became more crowded. Furthermore, with the invention automobiles, the traffic on the roads increased significantly, so there was a need for a better traffic system.             In 1912, an American policeman, Lester Wire, who was concerned with the increasing traffic, came up with the idea of the first electric traffic light. Based on W...
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đinh thị khánh ngọc
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đinh thị khánh ngọc
5 tháng 3 2022 lúc 21:26

điền T or F nhé

(.I_CAN_FLY.)
5 tháng 3 2022 lúc 21:30

1T

2T

3F

4T

5T

6F

1T

2T

3F

4T

5T

6T

Bá Hùng
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Dân Chơi Đất Bắc=))))
8 tháng 3 2022 lúc 21:21

   THE FIRST ELECTRIC TRAFFIC LIGHTS

In the early 1900's, the world was developing at a very rapid pace, and with the growth of industrialization, cities became more crowded. Furthermore, with the invention automobiles, the traffic on the roads increased significantly, so there was a need for a better traffic system.

In 1912, an American policeman, Lester Wire, who was concerned with the increasing traffic, came up with the idea of the first electric traffic light. Based on Wire's design, the lights were first installed in Cleveland, Ohio, on August 5, 1914, at the corner of 105th and Euclid Avenue.

The first electric traffic light had only red and green lights; it did not have a yellow light like modern- day traffic signals. Instead of a yellow light, it had a buzzer sound that was used to indicate that the signal would be changing soon.

In the year 1920, a policeman named William Potts in Detroit, Michigan invented the first four-way and three-colored traffic lights. Apart from red and green, a third color - amber (or yellow) - was introduced. Detroit became the first city to implement the four-way and three-colored traffic lights. In the 1920's, several automated traffic signals were installed in major cities around the world. The modern traffic light still uses this famous T-shaped model with three different colors.

116. When was the first electric traffic light invented?

A. In the early 1900's                     B. In 1912                          C. On August 5, 1914                      

117. Who invented the first electric traffic light?

A. William Potts                                        B. Lester Wire                    C. Euclid Avenue

118. How many colors did the first electric traffic light have?

A. 2                                                           B. 3                                    C. 4

119. Where were the lights first installed?

A. Cleveland, Ohio                                    B. Euclid Avenue    C. at the corner of 105th

120. Where were the first three coloured traffic lights used?

A. Detroit                                                   B. Ohio                              C. Euclid Avenue

Anh Thư
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Phạm Ngọc Bảo Trâm
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Nguyễn Quế Đức
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Đỗ Thanh Hải
24 tháng 7 2021 lúc 10:47

1 T

2 T

3 F

4 T

5 T

6 F

Khinh Yên
24 tháng 7 2021 lúc 10:48

T F F T T F

Nguyễn Hà Thái Phong
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Best Best
13 tháng 3 2020 lúc 15:19

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~

Khách vãng lai đã xóa
Trần Minh Ánh
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 N H T
4 tháng 8 2017 lúc 16:44

1.invented
2.longer
3.until
4.use
5.different

Tuệ nguyễn đẹp gái
23 tháng 8 2019 lúc 8:03

ngu! bài dễ mà ko biếtleuleu

Tuệ nguyễn đẹp gái
22 tháng 4 2020 lúc 21:25

1 invited

2longer

3until

4 use

5 diferrent

Lê Quỳnh  Anh
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Dương Hoàn Anh
6 tháng 11 2017 lúc 11:17

Đáp án : D

Dòng đầu tiên: In the early 1800’s, over 80 percent of the United States labor force was engaged in agriculture -> đầu những năm 1800, hơn 80 % lao động Hoa Kì tham gia vào nông nghiệp

Lê Quỳnh  Anh
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Dương Hoàn Anh
19 tháng 12 2019 lúc 17:08

Đáp án : D

Từ dòng 8: Industrial growth hinged on several economic factors. First, industry requires an abundance of natural resources... Second, factories demand a large labor supply -> sự phát triển công nghiệp dựa trên vài yếu tố kinh tế: đầu tiên là nguồn tài nguyên dồi dào, thứ hai là nguồn lao động lớn ---> Lực lương lao động lớn là thế mạnh để phát triển công nghiệp, không phải là lượng lao động thấp (low supply of lobor)