阅读下列短文，从每题所给的四个选项（A、B、C、D）中，选出最佳选项，
并在答题纸上将该选项标号涂黑。
A
I work in a major U．S．factory．We make refrigerators．Four thousand five hundred new refrigerators every day．It is a union workshop and it’s gradually shrinking as many blue collar factories seem to be but that is not what this story is about．This story is about one man who works in this huge factory．
I’ve seen him around for years but never paid much attention．He always seemed just a little odd．A little short A little．．．scruffy （肮脏的）．Always the same old red ball cap．And always a garbage bag in one hand．He walks around this big old factory on his breaks and his lunch time collecting aluminum （铝） cans．Day after day, month after month on hot days and cold days．Over the years I’ve followed him as he walked to his old pickup truck on the coldest day with snow blowing and everyone with their collars turned up and their hands in their pockets．He would be there with a 40 gallon garbage bag full of aluminum cans．
