英语四级六级阅读常见考点解析（2）：逻辑关系：并列、因果

【解析】
1. 考点出处：第一段While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job.

文章首句提到“这在很大程度上是一条单行道”，接下来谈到“同时，大学研究人员去工商业界碰运气很普遍，但是向反方向走的却很少。”这里的“反方向”指的就是“工商业界去大学工作”，由此可知，作者是想用“单行道”来描述“很少有实业科学家去大学工作”这一现象，故答案为C。

2. 考点出处：第二段Her main reason for returning to academia mid-career was to take advantage of the greater freedom to choose research questions.

该句提到，Helen Lee在事业发展的中期返回学术界的主要原因（Her main reason for..）是想利用那里更大的自由选择研究专题权利，由此可知她是为了她的“研究兴趣”才更换工作的。A选项中Her research interests.对应原文中的“freedom to choose research questions.”所以，答案为A。