He promised to tell me by himself when I ______.
A.come
B.would come
C.come
D.had come
答案:C
与乳汁产生关系最密切的脏腑是:()
A.肝、肾
B.脾、胃
C.肝、肾、脾
D.心、脑、肾
E.肝、肾、女子胞
如何掌握窑炉燃料用煤比例?