A. 广告主调研; B. 广告产品调研; C. 广告环境调研; D. 广告竞争调研;
A. 受众动机调研; B. 受众态度调研; C. 受众心理调研; D. 受众知觉调研;
A. 探索性调查; B. 因果性调查; C. 描述性调查; D. 结果性调查;
A. The job makes them work very hard. B. The job helps them live on their own. C. Both have their physical limitations. D. Both have to use their feet to do their job.