Facing this tendency, we can't help exploring some underlying factors that are responsible. In the very first place, with the policy of reform and opening up, Chinese people's living standard has been greatly improved, and therefore, most of them can afford to travel around. What's more, ...
在一个长、宽、高分别为40厘米、50厘米、60厘米的长方体水箱中有A,B两个进水管,先开A管,经过一段时间后两管同开.折线图表示进水情况,请根据图回答问题. (1)A管开放( )分钟后,B管才开始与A管同时进水; (2)B管开始进水时,水箱的水已有( )厘米; (3)A,B两管
Hello, I am Xiao Rong.I am from China .This is my family’s travel plan.We are going in to travel around China during the summer holidays.We are going to stay in China for two weeks.In the first week , We are going to visit Chengdu, Beijing, Yunnan and Sanya.I know the Emei Mo...