下列抛物线中,与轴有两个交点的是( )
A:y=5x2-7x+5
B:y=16x2-24x+9
C:y=2x2+3x-4
D:y=3x2-26x+2
将直线y=-2x向下平移两个单位,所得到的直线为( )
⑴____A. play B. phone C. computer
⑵____A. help B. TV C. talk
⑶____A. in B. under C. box
⑷____A. breakfast B. lunch C. evening
⑸____A. mum B. after C. dad