A:古代朴素唯物主义和近代形而上学唯物主义
B:细胞学说、能量守恒和转化定律、生物进化论
C:近代形而上学唯物主义和客观唯心主义
D:黑格尔的辩证法和费尔巴哈的唯物主义
My new classmates
I have two new classmates. They are Paul and Mary.……
— ______of volunteers will be needed for the 2016 Olympic Games in Rio de Janeiro, Brazil.
— I hope to go there and _______them.