The teacher did what she could _____ that child.
A:to help
B:help
C:helped
D:helps
如图,人坐在小船上,用力推另艘小船,能够把另一艘小船推开而自己坐的小船不动吗?为什么?
已知cosα=﹣45,α为第三象限角.
求sinα,tanα的值;
《十二铜表法》规定:相邻田地之间,应留空地五尺,以便通行和犁地,该空地不适用时效的规定。这项条款说明古罗马( )