It takes ________ two hours ________ the English story.
A:I; read
B:me, read
C:I; to read
D:me, to read
先化简,再求值:5x2+4﹣3x2﹣5x﹣2x2﹣5+6x,其中x=﹣3.
植物叶肉细胞中的能量转换器是( )