——Dad, do you like my picture? —— _______________! It's the nicest one I've ever seen!
A:What beautiful
B:How careful
C:How wonderful
D:What wonderful picture
如图,MC∥AB,NC∥AB,则点M,C,N在同一条直线上,理由是____
两个物体紧靠在一起,而没有发生热传递,那么它们一定具有相同的( )
如图是自然环境中部分物质的循环示意图.请回答下列问题: