There's __________ with your computer. You'd better __________ as soon as possible.
A:wrong something; have it repair
B:nothing wrong; have it repaired
C:something wrong; have it repaired
D:something wrong; have it repair
形成上海与杭州“同城效应”的最主要条件是( )
已知函数fx=xx+2-kx2x∈R有四个不同的零点,则实数K的取值范围是( )
如图两个图表示排卵、受精、胚胎发育等过程,根据图回答问题.
依法治国的核心是什么?