题目

As a boy, my family used to vacation to Oregon. Without even   41   it at the time, I formed a (n)   42  attachment(impression) to those beautiful mountains and forests. Years later, this attachment would   43 itself in a powerful and life-changing way. Sometime during my first year in college I began to get really restless. I grew__44  school and wanted to do something else. Without analyzing the   45  , I quit school and took a job in a big construction company. It was my 46  that this temporary change would provide me with a whole new idea. Well it 47,  beca15．实验室用高锰酸钾制取氧气的部分操作如图所示，其中正确的是（　　）A．  装药品B．   制备C．  收集D．      验满