如图等高线由底向高弯曲的地表形态是( )
A.山脊
B.丘陵
C.山谷
D.盆地
读图可知,图中等高线向海拔高出凸为山谷.根据题意.
故选:C.
There is a nature park the city. [ ]
A. in
B. over
C. under
SNA与MPS之间的主要区别有哪些?