1. 胃   muscle   nerves   veins   stomach   Hint Half-n-half Clue   2. 肌肉   muscle   veins   nerves   blood   Half-n-half Clue   3. 血液   bone   blood   kidney   gums   Half-n-half Clue   4. 肾脏   blood   bone   kidney   liver   Half-n-half Clue   5. 骨头   lung   bone   veins   skull   Half-n-half Clue   6. 神经   veins   kidney   nerves   stomach   Half-n-half Clue   7. 头骨   brain   skull   intestines   veins   Half-n-half Clue