隋朝大运河的四段、五河是哪四段、哪五河?
参考答案:
四段:通济渠、永济渠、邗勾;
五河:海河、黄河、淮河、长江、钱唐江
子
The batteries can be recharged when they run ______.
A. over B. down C. out D. along