She ________ to school at 7: 40 every day, but yesterday she ________ to school at 7:00.
A:goes; goes
B:goes; went
C:went; goes
如图,已知C,D是以AB为直径的半圆周上的两点,O是圆心,半径OA=2,∠COD=120°,则图中阴影部分的面积等于____