A:①②
B:③④
C:①③
D:②④
The Gay Genius is the book __________ I like to read every day.
学校安排胡老师给请病假的黄小婷补思想品德课。这个责任来自( )
菱形的两条对角线长分别为6和8,则菱形的面积是( )