A：唯物主义
B：唯心主义
C：唯物辩证法
D：形而上学
① Are these all ours? ____ A. It is Zhang Peng's.
② Whose is it? ____ B. Yes，it is.
③ Is this yours?____ C. Yes. they are.
Of the three foreigners, one is from London, ____ are from the USA.
能与正八边形进行平面镶嵌的正多边形是____ ．
横梁的抗弯曲能力与什么有关？
具有全年高温多雨特点的气候类型是：
