问题补充：
Nowadays, many people walk to work Copenhagen Conference calling for living a low-carbon lifestyle to deal with global warming.
A. in relation to
B. in response to
C. in addition to
D. in opposition to
答案：
A. in relation to
(答案→)B. in response to
C. in addition to
D. in opposition to
解析：考查固定词组，in relation to意思“与…有关”，in response to意思“对…做出反应”，in opposition to意思“反对”，in addition to意思“除…之外”，句子意思“当今，许多人走着去上班对哥本哈根会议号召以低碳的生活方式来解决全球变暖做出反应”
