The survey results concerning family and social environments were announced in November, 2010 and last month ______.
A.accidentally
B.unconsciously
C.cautiously
D.respectively
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D解析这题考查词义辨析：accidentally偶然地，unconsciously无意的，cautiously谨慎地， respectively各自地，句意是：关于家庭和环境的调查在2010年11月和上个月分别发表。选D。