根据以上统计图,解答下列问题:
Don't forget ________ your homework to school tomorrow.
There is a common saying in China________nothing in the world is difficult for one who sets his mind on it.
A.KAlSiO4 B.KAlSi2O6 C.KAlSi3O8 D.KAlSi4O10
该正长石用二氧化硅和金属氧化物形式来表示,其组成为____.