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Traffic lights only became necessary in the 19th century, when traffic began to increase. A traffic signal (1)..................................... by J O Knight, a railway signaling engineer, was installed outside the Houses of Parliament in London in 1868. It looked like a railway signal of the time but a few weeks later it blew up,and signal of this type were no (2)....................................... used. The mordern traffic light is an American invention, the first red and green...
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Traffic lights only became necessary in the 19th century, when traffic began to increase. A traffic signal (1)..................................... by J O Knight, a railway signaling engineer, was installed outside the Houses of Parliament in London in 1868. It looked like a railway signal of the time but a few weeks later it blew up,and signal of this type were no (2)....................................... used. The mordern traffic light is an American invention, the first red and green lights. set up in Cleveland in 1914 followed a few years later by three-colour lights in New York. These new lights didn't arrive in Britain (3)................................... 1925. A year later, the first automatic lights were installed at a road junctionin Wolverhampton, where they remained in (4)............................. for the next 42 years. At the beginning of the 1930s, the first vehicle-activated lights were set up in London. Since these early days, traffic light design has developed to cater for (5)........................................ types of road user.

3
4 tháng 8 2017

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

23 tháng 8 2019

ngu! bài dễ mà ko biếtleuleu

28 tháng 3 2017

The traffic lights ___TURNED___ green and I pulled away.

28 tháng 3 2017

The traffic lights _TURNED_ green and I pulled away.

8 tháng 3 2022

Red

8 tháng 3 2022

green

II. Read the text carefully, then do the tasks. 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...
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II. Read the text carefully, then do the tasks.

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-coloured traffic lights. Apart from red and green, a
third colour - 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.
safest vehicles only far crossroad follow across reason

A. Decide whether the following sentences are true (T) or false (F).
1. Due to the invention of cars, the traffic on the roads increased rapidly.
2. The first electric traffic light was invented in 1914 by Lester Wire.
3. The first electric traffic light had red, green and amber lights.
4. The yellow light didn’t exist until the 1920s.
5. Detroit was the first city to use the red, yellow, and green lights to control road traffic.
6. The modern traffic light works on the same principle as Wire’s original light.
B. Answer the questions
1. When was the first electric traffic light invented?
_______________________________________________
2. Who invented the first electric traffic light?
_______________________________________________
3. How many colours did the first electric traffic light have?
_______________________________________________
4. Where were the lights first installed?
_______________________________________________
5. What was used instead of yellow light to warn everyone of a signal change?
________________________________________________
6. When was the yellow light added?
________________________________________________

1
13 tháng 3 2020

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~

13 tháng 3 2020

Ai giúp mình trả lời câu 5 với ạ

19 tháng 5 2021

turn green

19 tháng 5 2021

Answer: turn green

12 tháng 8 2017

1, Choose the correct answers

a, We should (walk/walk on/walk through/walk across) th street at the zebra

b, We should wait for the traffic lights (turn green/to turn greeen/turn yellow/to turn yellow) before we cross the street

c, All of us have to obey (traffic rules/traffic/traffic jam/regular) strictly

20 tháng 4 2020

We should wait for the traffic lights……………….before you cross the street.

A. turn green B. to turn green C. turn yellow D. to turn yellow

Lời giải chi tiết : (thật ra cũng nhác nhưng do bài này nó ngắn nên có hứng)

Cụm từ: wait for sth to V nghĩa là : chờ để cái gì được xảy ra rồi mới làm ....
Thì theo cấu trúc ta sẽ có :

=> We should wait for the traffic lights to turn green before we cross the street.

Nghĩa : Chúng ta nên đợi cho đèn giao thông nó chuyển sang màu xanh trước khi đi qua đường.(đây là nghĩa do ý kiến riếng của mình nhưng cấu trúc đúng ạ)

P/S : Good Luck
~Best Best

16 tháng 2 2017

Choose the best answer.

He forgot to give a ____ before he turned left and got a ticket

A. hand

B. signal

C. sign

D. light

All of us have to obey ____ strictly.

A. traffic

B. traffic rules

C. traffic jam

D. regular

We should wait for the traffic lights _____ before we cross the street

A. turn yellow

B. to turn yellow

C. turn green

D. to turn green

We should ____ the street at the zebra crossing

A. walk

B. walk through

C. walk on

D. walk across

You should ___ right and left when you go across the road

A. see

B. look

C. be

D. take

19 tháng 2 2017

I.Choose the correct sentence (A,B,C or D) that contains the given words.

1.Not only/refuse/take/medicine/but/hit/the nurse

A.Not only he refused to take medicine but he also hit the nurse

B.Not only hr refused to take medicine but also hit the nurse

C.Not only did he refuse to take medicine but he also hit the nurse

2.If/I/relize/tracffic lights/red/stop

A.If I realized that the traffic lights were red,I would stop.

B.If I realized that the traffic lights were red,I will stop.

C.all are correct

3.No matter /how/hard/he/try/not/sucessful

A.No matter how hard he tried,he did not sucessful.

B.No matter how hard he tried,he was not sucessful.

C.No matter how hard he tried,he is not sucessful.

4.Uyen/interested/films/children.

A.Uyen is interested in films for children.

B.Uyen is interested at films for children.

C.None are correct