—Jiff, is it your computer game?
—_____. It's Linda's
A:Yes, it is
B:Yes, it isn't
C:No, it isn't
D:That's right
如图,在平面直角坐标系xOy中,⊙P与y轴相切于点C,⊙P的半径是4,直线y=x被⊙P截得的弦AB的长为43,求点P的坐标.
新生儿注射乙肝疫苗后,体内产生的特殊蛋白质及所属的免疫类型分别是( )
在调查校园生物中,以下同学的做法,正确的是()