A:亮,看到的细胞数目多
B:暗,看到的细胞数目少
C:亮,看到的细胞数目少
D:暗,看到的细胞数目多
在平面直角坐标系中,点P的横坐标是-3,且点P到x轴的距离为5,则点P的坐标是( )
关于电磁波,下列说法正确的是( )
It's reported that the passenger ship "Eastern Star" capsized and sank(翻沉) in the Yangtze River _____ June 1st, 2015.