题目

Why do I want to go to college? No one has ever asked me _46 _ a question. But many times I have asked myself. I have __47__ a whole variety of reasons. __48__ important reason is that I want to be a better man. Many things make human beings different __49__ or better than or even superior to animals. One of the most important things is __50__ . If I fail to receive higher education, my education __51_. As I want to be a fully developed man, I must get a well-rounded education, which good colleges and universities are supposed to __52__. I know one can get educated ___53  many ways,下列化学方程式书写正确的是（ ）A．磷在空气中燃烧  2P+5O2 P2O5B．铁丝在氧气中燃烧  3Fe+2O2 Fe3O4C．实验室用过氧化氢溶液制取氧气  2H2O22H2O+O2D．加热高锰酸钾制取氧气  2KMnO4 K2MnO4+MnO2+O2