我国现存最早的对女子生理病理有较系统论述的医籍是()
A.《千金要方》
B.《黄帝内经》
C.《经效产宝》
D.《妇人良方大全》
E.《诸病源候论》
参考答案:B
No sooner __________ these words than the warden hit him on the head with the soup spoon.
A.did he say
B.has he said
C.had he said
D.does he say
院子里有一群兔子和一群鸡,其中有头50个,有脚140只,问鸡和兔子各为几只()
A.30,20
B.20,30
C.10,40
D.40,10