比的前项缩小5倍，后项扩大5倍，比值______．
5×5=25，
比的前项缩小5倍，后项扩大5倍，比值缩小25倍；
故答案为：缩小25倍．
—Your new sweater looks very beautiful, it fits you very well.
—__________. [ ]
A. I'm glad to hear that
B. Thank you
C. No, no, yours is better
D. You are right
把两个相同的正方体拼在一起成一个长方体，这个长方体的表面积是两个正方体表面积之和的______分之______．
