小儿攒竹位于:
A.两眉中间至前发际成一直线
B.自眉头起沿眉向眉梢成一横线
C.两目内眦之中
D.眉头凹陷中
E.眉后凹陷外
参考答案:A
Would you like Helen _____ you since you have some difficulties?
A.helping
B.to help
C.has helped
D.help
已知某流体质量为M,体积为V,则该流体的比容ν是()。
A、ν=V/M
B、ν=M/V
C、ν=MV