1. 拓撲結構   topology   etiology, aetiology   economics   ornithology   Hint Half-n-half Clue   2. 芭蕾舞蹈藝術   cosmetology   choreography   rheology   anthropology   Half-n-half Clue   3. 占星術   calligraphy   astrology   aeronautics   accountancy   Half-n-half Clue   4. telepathy   telepathy   telegraphy   anthropology   topology   Half-n-half Clue   5. 會計   accountancy   anthropology   sociology   economics   Half-n-half Clue   6. 航空學   etiology, aetiology   anthropology   aeronautics   choreography   Half-n-half Clue   7. 人類學   etiology, aetiology   topology   anthropology   telegraphy   Half-n-half Clue