【题目】It was silly of him to his notes during that important test， and as a result， he got punished.
A. stick to B. keep to
C. refer to D. point to
在线课程【答案】C
【解析】句意：他真愚蠢在那么重要的考试中查看笔记，结果，他受到了惩罚。stick to坚持；keep to 保持；C. refer to 参考；D. point to指向。根据语境，选C。