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 favour of
C、
in contrast to
D、
in excess of
【正确答案】
A
【答案解析】
in response to反应，回复；in favour of赞同，同意；in contrast to与…对比；in excess of超过，多余。句意：人类活动的一大部分，尤其是与周围环境相关的活动是对情况或事件的反应。
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