单选题 People don't rely on specialized labor so much nowadays because______.

A、 their wives think their husbands will fix the things
B、 they have the enthusiasm for doing things for themselves
C、 the books and papers tell them how to do something by themselves
D、 both B and C

【正确答案】 D

【答案解析】文章开篇提到so great is our passion for doing things for ourselves"我们如此有激情自己动手”，以至对专业人士的需求越来越少，随后又谈到无数的do-it-yourself publications也使得人们不能再找接借口对某事置之不理，因此选项B，C都是构成如今人们对专业劳工不那么倚重的原因。