题目

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空 白处的最佳选项。The Uncommon ProfessionalAnother long and tiring day! I went to the dark end of theshelves, pressed my forehead against the wall and buried myself in a fewmoments of quiet 1 . Was this the way it would be for the rest ofmy life? Here I was, two years out of school, working at yet another 2 low-pay, dead-end job.There were several new guys on the jobthe next morning—temporary3 . One of them, wearing a 4 with his name Jim sewn on thepocket, caught my eye. The company did下列有关染色体、DNA、基因、脱氧核苷酸的说法，不正确的是A．在DNA分子结构中，与脱氧核糖直接相连的一般是一个磷酸基和一个碱基B．基因一般是具有遗传效应的DNA片段，一个DNA分子上可含有成百上千个基因C．一个基因含有许多个脱氧核苷酸，基因的特异性是由脱氧核苷酸的排列顺序决定的D．染色体是DNA的主要载体，一条染色体上含有1个或2个DNA分子