单选题
The ______ to the advertisement she placed in the newspapers was very good; over a hundred letters of application were received. (2011年南京大学考博试题)
【正确答案】
A
【答案解析】解析：各选项的意思是：response答复，反应，响应；answer回答，回音，答案；correspondence函件，通信联系，一致；echo回声，共鸣。根据句意可知，答案是A。