1. zheng rong [shu;zhu]   telepathy   etiology, aetiology   topology   cosmetology   Hint Half-n-half Clue   2. shen xue   theology   astrology   telepathy   cosmetology   Half-n-half Clue   3. fang she xue   ornithology   economics   radiology   choreography   Half-n-half Clue   4. liu bian xue   etiology, aetiology   accountancy   archeology, archaeology   rheology   Half-n-half Clue   5. she [hui;kuai] xue   sociology   etiology, aetiology   aeronautics   archeology, archaeology   Half-n-half Clue   6. [de;di] zhen xue   aeronautics   seismology   anthropology   theology   Half-n-half Clue   7. dian xin fa   telegraphy   calligraphy   sociology   topology   Half-n-half Clue