For you, a cell phone is probably just a device that you and your friends use to keep in touch with family and friends, take pictures, play games, or send text
For you, a cell phone is probably just a device that you and your friends use to keep in touch with family and friends, take pictures, play games, or send text message. The definition of a cell phone is more specific: it is a hand- held wireless communication device that sends and receives signals by way of small special areas called cells.In 1973, an electronic company called Motorola hired Martin Cooper to work on wireless communication. Motorola and Bell Laboratories ( now AT& T) were in a race to invent the first portable communication device. Martin Cooper won the race and became the inventor of the cell phone.On April 3, 1973, Cooper made the first cell phone call to his opponent at AT& T while walking down the streets of New York City.People on the sidewalks gazed at Cooper in amazement as he walked down the street talking on his cellular phone .Cooper's phone was called a Motorola Dyna-tac. .What is a cell phone ? -->................................................................................. 2.Who invented the cell phone ? --> 3.When did the first cell phone call Cooper made ? --> 4.Did Motorola or Bell Laboratories win in the race to invent the first cell phone ? --> Giúp với ạ.Mình cần câu trả lời chính xác ạ.
Lời giải 1 :
`1`. It is a hand- held wireless communication device that sends and receives signals by way of small special areas called cells.
- Dẫn chứng: The definition of a cell phone is more specific: it is a hand- held wireless communication device that sends and receives signals by way of small special areas called cells.
`2`. Martin Cooper
- Dẫn chứng: In 1973, an electronic company called Motorola hired Martin Cooper to work on wireless communication.
`3`. On April 3, 1973
- Dẫn chứng: On April 3, 1973, Cooper made the first cell phone call to his opponent at AT& T while walking down the streets of New York City.
`4`. Motorola won in the race to invent the first cell phone.
- Dẫn chứng: In 1973, an electronic company called Motorola hired Martin Cooper to work on wireless communication. Motorola and Bell Laboratories ( now AT& T) were in a race to invent the first portable communication device. Martin Cooper won the race and became the inventor of the cell phone
Thảo luận
Lời giải 2 :
`1`. It is a hand-held wireless communication device that sends and receives signals by way of small special areas called cells.
`-` Dẫn chứng: câu `2`
`2`. Martin Cooper invented the cell phone.
`-` Dẫn chứng: câu `5`
`3`. On April 3, 1973, Cooper made the first cell phone.
`-` Dẫn chứng: câu `6`
`4`. Motorola won in the race to invent the first cell phone.
`-` Dẫn chứng: câu `3+ 5`
`-` Martin Cooper được thuê vào công ty mang tên Motorola, mà anh ấy lại chiến thắng trong cuộc đua `=>` Công ty Motorola đã thắng.
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