1. 拓扑结构   theology   topology   economics   astrology   Hint Half-n-half Clue   2. 书法   rheology   sociology   calligraphy   telegraphy   Half-n-half Clue   3. 社会学   ornithology   aeronautics   sociology   anthropology   Half-n-half Clue   4. 人类学   anthropology   sociology   ornithology   radiology   Half-n-half Clue   5. 电信法   aeronautics   accountancy   telegraphy   topology   Half-n-half Clue   6. 地震学   etiology, aetiology   seismology   aeronautics   economics   Half-n-half Clue   7. telepathy   telepathy   telegraphy   entomology   radiology   Half-n-half Clue