明清两代,米谷运销在长江中下游地区的长途贸易中占有重要的地位。哪些省份较早地开始了区际间粮食物流活动?
参考答案:湖南、湖北、江西、安徽、江苏、浙江等省份。
专线用户反应上网慢,最常见原因有哪些?()
A.互联互通原因
B.CMNET质量差
C.用户操作错误
The students were ________ over the ________ problem,listening to the teacher with a ________ expression on their faces.
A.puzzled;puzzling;puzzling
B.puzzled;puzzling;puzzled
C.puzzling;puzzling;puzzled
D.puzzling;puzzled;puzzling