习 * * 在纪念现行宪法公布施行30周年大会上的讲话中强调,我们要把()教育作为党员干部教育的重要内容。
A.法律
B.法制
C.宪法
D.制度
参考答案:C
函数f(x)=x2-4x+3( )
A.在(-∞,+∞)上是减函数
B.在(-∞,4)是减函数
C.在(-∞,0)上是减函数
D.在(-∞,2)上是减函数
Though the long-distance runner ______ his previous record last month, his trainer let him ______ its speed as he went around the curve..
A.bettered; slowed
B.better ; to slow
C.bettered; slow
D.better; slow