单选题
A large part of human activity, particularly in relation to the environment, is ______ conditions or events.
A、
in response to
B、
in favor of
C、
in contrast to
D、
in excess of
【正确答案】
A
【答案解析】
[解析] in response to：对……做出反应；in favor of：赞成，支持；in contrast to：和……相对；in excess of：超过。根据句意可知，选A。
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