It is human activities on the earth that are to global warming.
A. be blamed for
B. to blame for
C. take charge of
D. be responsible with
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(答案→)A. be blamed for
B. to blame for
C. take charge of
D. be responsible with
解析：短语辨析. be blamed for因……被责备，归咎于；to blame for因……怪罪；take charge of接管，负责；be responsible with负责。句意：需要因为全球变暖而受到责备的，是人类在地球上的活动。结合本句不定式符号to及语境，可知选A。所给答案有误。