1. 動物学   psychology   trigonometry   zoology   astronomy   Hint Half-n-half Clue   2. 地理学   geography   algebra   biology   trigonometry   Half-n-half Clue   3. 哲学   physics   philosophy   calculus   astronomy   Half-n-half Clue   4. 微積分学   calculus   trigonometry   chemistry   physics   Half-n-half Clue   5. 地質学.   philosophy   botany   geology   biology   Half-n-half Clue   6. 生物学   botany   psychology   geology   biology   Half-n-half Clue   7. 植物学   geometry   calculus   history   botany   Half-n-half Clue