初级卫生保健的特点为________、________、________和________。
参考答案：社会性；群众性；艰巨性；长期性
She doesn't want to talk about it ______ the phone. [ ]
A. in
B. to
C. for
D. on
气机升降出入的枢纽是（）
A.肝、肺
B.肺、肾
C.脾、胃
D.肝、胆
E.心、肾
