A.正确B.错误内地居民与香港居民在中国内地结婚，办理婚姻登记的机关是省、自治区、直辖市人民政府民政部门或省、……

单项选择题Nonverbal communication refers to messages people send to others that do not contain words. A、正确 B、错误

单项选择题What are the disadvantages of outsourcing peripheral activities (such as training) to external companies?（ ）