一次同余方程组最早的描述是在哪本著作里?()
A、九章算术
B、孙子算经
C、解析几何
D、微分方程
参考答案:B
表寒里热之喘证,辨证属()
A.外邪侵袭
B.虚实夹杂
C.外感内伤
D.寒多热少
E.以上都不是
-Was the United State of America founded on July 4th, 1776?
--You _________ be right but I need to check it in the history textbook anyway.
A.have to
B.must
C.may
D.will