When did Motorola introduce the first cell phones for commercial use?

Câu hỏi:

A. in the same years when he first made a cell- phone call

B. in 1981

C. in 1983

D. in the same year when AT& T constructed a cell phone system.

Trả lời:

Thông tin: After a decade, Motorola introduced the first cell phone for commercial use.

Chọn C

Câu 1:

Before I went to drama school, I had to … quite a lot of family pressure for me to study medicine.

Câu 2:

Choose the underlined part among A, B, C or D that needs correcting.

A Hoi An-based charity organization gave free milk to poor ailing, and disabled children in the central province of Quang Nam on last Wednesday.

Câu 3:

Choose the underlined part among A, B, C or D that needs correcting.

In Thomas Edison's early life, he has been thought to have a learning disability and he could not read till he was twelve.

Câu 4:

Diamonds are often found in rock formations called pipes, _____ the throats of extinct volcanoes.

Câu 5:

When did AT& T widely start their cellular phone system?

Câu 6:

What does the word" gazed" mean?

Câu 7:

The phrase " tried it out" refers to __________ .

Câu 8:

Viết lại câu: Everyone started complaining the moment the announcement was made.

=> No sooner.......

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