When he arrived at the airport, Lee Minho found that ________ fans were waiting for him there.
A:hundred
B:hundreds
C:hundred of
D:hundreds of
用分子的性质解释下列生活中的现象,其中不正确的是()
萤火虫发光所需的能量来源于细胞____.
下列方程一定是一元二次方程的是( )