1. ming xin [pian;pian]   letter   radio   postcard   video   Hint Half-n-half Clue   2. xin jian   postcard   letter   video   post office   Half-n-half Clue   3. lu yin ji   post office   tape recorder   advertisement   video   Half-n-half Clue   4. [chuan;zhuan] xun zhe ，xin shi ，su [du;duo] gang wei   computer   courier, messenger, speed post   tape recorder   printer   Half-n-half Clue   5. ji suan ji   radio   parcel   computer   news   Half-n-half Clue   6. dian shi   television   courier, messenger, speed post   computer   news   Half-n-half Clue   7. hua tong   advertisement   microphone   television   news   Half-n-half Clue