1. Can you really be best friends with someone of the opposite sex without ulterior motives?2. It is normal to be attracted to people of the opposite sex.
 the opposite sex the opposite gender
異性(一人) = someone of the opposite sex異性(多人) = people of the opposite sex
I am much smarter than my husband, but it is important to rotect his manhood.下一題 - 公德心 f我要發問