1. 昆虫学.   accountancy   archeology, archaeology   entomology   topology   Hint Half-n-half Clue   2. 人類学   anthropology   ornithology   astrology   telegraphy   Half-n-half Clue   3. 鳥類学.   cosmetology   telepathy   rheology   ornithology   Half-n-half Clue   4. 精神感応.   radiology   telepathy   economics   etiology, aetiology   Half-n-half Clue   5. 社会学   rheology   archeology, archaeology   telepathy   sociology   Half-n-half Clue   6. 能書, 能筆   radiology   ornithology   calligraphy   etiology, aetiology   Half-n-half Clue   7. 電信術   etiology, aetiology   telegraphy   ornithology   rheology   Half-n-half Clue