北宋末年查检无主田收归国有的法律,称为()。
A.屯田制
B.限田制
C.均田法
D.公田法
参考答案:D
---Has your father returned from Africa yet?
---Yes, but he ____ here for only three days before his company sent him to Australia.
A.was
B.has been
C.will be
D.would be
引起犬前列腺纤维型肥大的激素是()
A.雄性激素
B.雌性激素
C.前列腺素
D.垂体后叶素
E.肾素