单选题 25. Which of the following italicized parts serves as an appositive? ______

A、 I have, to be honest, never returned to my hometown since I left there.
B、 The fact, generally speaking, is what I have told you.
C、 My teacher, a nice old man, often taught me something that I could not find on my textbooks.
D、 Business, he reflected, appeared as brisk as ever.

【正确答案】 C

【答案解析】 句子成分题。根据题意可知，本题要求考生判断四个选项中的斜体部分哪一个是同位语。通过分析可知，A、B和D中的斜体部分均为插入语，只有C中的a nice old man是对my teacher进行解释说明的同位语，因此答案为C。