教师劳动的特点包括()
A.系统性
B.示范性
C.学习性
D.创造性
参考答案:B, D
Bill was staying on a farm with his uncle last summer.So ____ Mary.
A.did
B.has
C.was
D.is
(1) 登泰山 (2) 看日出 (3) 购买门票 (4) 下山 (5) 在山上过夜( )
A.3-2-5-1-4
B.2-4-5-3-1
C.2-3-1-4-5
D.3-1-5-2-4