1. zheng rong [shu;zhu]   ornithology   cosmetology   aeronautics   accountancy   Hint Half-n-half Clue   2. [jing;jing] [ji;ji]   cosmetology   rheology   economics   calligraphy   Half-n-half Clue   3. kun chong xue   entomology   economics   calligraphy   accountancy   Half-n-half Clue   4. [de;di] zhen xue   anthropology   economics   seismology   entomology   Half-n-half Clue   5. yuan yin [lun;lun] ，yuan yin [lun;lun]   etiology, aetiology   astrology   radiology   entomology   Half-n-half Clue   6. shu fa   anthropology   telegraphy   choreography   calligraphy   Half-n-half Clue   7. hang [kong;kong] xue   astrology   telegraphy   aeronautics   accountancy   Half-n-half Clue