较少出现蜘蛛痣的部位是
A．面部
B．背部
C．手背
D．颈部
E．前胸和肩部
参考答案：B
--- Are your family ready for rafting?
---Yes, I really want my children to experience that they are young
A．\
B．while
C．unless
D．if
子程序调用指令为______。
A．M98
B．M99
C．G98
D．G99
