胃癌最主要的转移途径是血行转移。
参考答案:错
---How many employees are there in the company?
---We have 500 people working there.
A.near
B.more
C.something like
D.or so
下列哪项不属于农村孕产期系统保健的三级管理范围
A.乡卫生院
B.县妇幼保健院
C.村妇幼保健院
D.县医院
E.乡妇联