A:流水堆积
B:流水侵蚀
C:风力搬运
D:岩浆活动
1.2乘2.1的积加上10.5除以2.1的商,和是多少?
下列词语中划线的字,每对读音都不相同的一组是 ( )
Let's____planting the trees until tomorrow. I think it's going to rain.