函数y=-(x-2)x的递增区间是____________,递减区间是
When I got back home I saw a message pinned to the door, ________ “ Sorry to miss you; will call later.”
A.read
B.reads
C.to read
D.reading
下列系统软件中,属于操作系统的软件是()。
A.Windows2000
B.Word2000
C.powerpoint
D.Winrar