Where there's a will there's a way,so you are________to be jobless or unsuccessful for long.
A:probable
B:impossible
C:likely
D:unlikely
已知一粒大米的质量约为0.000021千克,这个数用科学记数法表示为( )
现有点A(2,0)和抛物线E上的点B(-1,n),请完成下列任务: