与肾关系密切的体是下列哪一项
A．筋
B．脉
C．肌肉
D．皮
E．骨
参考答案：E
My aunt has two children. But _____ of them lives with her.[ ]
A. each
B. neither
C. either
D. both
垂直放置于铸型中的型芯的芯头为（）。
A.水平芯头
B.垂直芯头
C.悬臂芯头
D.特殊芯头
