表示西经的符号是（ ）
A．S
B．W
C．E
D．N
表示西经的符号是W，表示东经的符号是E．
故选：B．
______in mind as well as in body, the child needs more than medical care.
A．Sick
B．Be sick
C．Because sick
D．For sick
简述切削层横截面要素？
