1. 鳥類学.   telegraphy   telepathy   topology   ornithology   Hint Half-n-half Clue   2. 電信術   sociology   economics   telegraphy   choreography   Half-n-half Clue   3. 精神感応.   seismology   telepathy   rheology   anthropology   Half-n-half Clue   4. 考古学   sociology   ornithology   archeology, archaeology   accountancy   Half-n-half Clue   5. 地震学   seismology   theology   calligraphy   accountancy   Half-n-half Clue   6. 占星学   seismology   astrology   calligraphy   topology   Half-n-half Clue   7. 神学.   telegraphy   topology   theology   sociology   Half-n-half Clue