Wang Hai found the most sensitive place of an ox was its nose. He later created vehicles pulled by oxen and they became the important tool for transferring people and goods.
A.正确
B.错误
正确答案：正确
Wang Hai found the most sensitive place of an ox was its nose. He later created vehicles pulled by oxen and they became the important tool for transferring people and goods.
A.正确
B.错误
正确答案：正确