选定段落的方法( )
A.在段落中三击
B.在段落中双击
C.在段落中按CTRL单击
D.在段落中按ALT单击
参考答案:A
一次函数y=kx+b满足x=地时,y=-h;x=h时,y=h,则这个一次函数是( )
A.y=2x+1
B.y=-2x+1
C.y=2x-1
D.y=-2x-1
--- He didn’t come to school yesterday, didn’t he ?
--- _________.He was ill in bed.
A.Yes, he did
B.No, he didn’t
C.Yes, what a pity
D.No, I think