Our homework has changed a lot. Who can tell ______ it would be like in _______ five years.
A:how, another
B:what, more
C:how, other
D:what, another
直线y=12x+b与直线y=﹣2x+2的交点不可能在( )
将一盆天竺葵和一只小白鼠一起放在一个密闭的玻璃罩中,如图所示,根据如下实验回答问题;
有关PCR技术的说法,不正确的是( )