Approximately how many cars were there in the United States in 1900 ?  

Câu hỏi :

Approximately how many cars were there in the United States in 1900 ?  

A 4,000 

B 8,000 

C 10 million 

D An unknown number

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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