1. 經濟   etiology, aetiology   choreography   economics   seismology   Hint Half-n-half Clue   2. 昆蟲學   entomology   theology   rheology   telegraphy   Half-n-half Clue   3. 放射學   calligraphy   radiology   anthropology   entomology   Half-n-half Clue   4. 原因論，原因論   sociology   telegraphy   rheology   etiology, aetiology   Half-n-half Clue   5. 考古學，考古學   archeology, archaeology   telepathy   aeronautics   topology   Half-n-half Clue   6. 人類學   anthropology   telepathy   rheology   calligraphy   Half-n-half Clue   7. 占星術   sociology   cosmetology   seismology   astrology   Half-n-half Clue