1. telepathy   aeronautics   ornithology   radiology   telepathy   Hint Half-n-half Clue   2. 拓扑结构   rheology   theology   accountancy   topology   Half-n-half Clue   3. 会计   archeology, archaeology   topology   theology   accountancy   Half-n-half Clue   4. 芭蕾舞蹈艺术   cosmetology   theology   choreography   rheology   Half-n-half Clue   5. 地震学   aeronautics   seismology   archeology, archaeology   astrology   Half-n-half Clue   6. 原因论，原因论   topology   economics   entomology   etiology, aetiology   Half-n-half Clue   7. 电信法   accountancy   entomology   topology   telegraphy   Half-n-half Clue