A:Not only does the Internet expand
B:Not only expands the Internet
C:Not only the Internet expand
D:Not only the Internet does expand
下列化学用语与含义不相符的是( )
215 =____ 438 =____ 748 =____
已知一个菱形的周长是20cm,两条对角线的比是4:3,则这个菱形的面积是( )