这两句都正确吗?high-speed rail service was introduced into China in 2007.high-speed rail service in China was introduced in 200

分类: 作业答案 • 2022-07-11 15:32:36

问题描述：

这两句都正确吗?high-speed rail service was introduced into China in 2007.high-speed rail service in China was introduced in 2001

答

正确