請依下文回答第 41 題至第 45 題
        Have you noticed the phenomenon of puppy dog eyes, the inner eyebrow raising movement of dogs? Do you believe ita result of __41__ for dogs to appeal to humans? Researchers dissected dog and wolf heads and found that the facial muscleanatomy of both animals was almost identical -- __42__ an eyebrow muscle, found only in dogs. The inner eyebrow raisingmovement makes the dogs’ eyes appear larger and more infant like, __43__ prompts a “nurturing” response in humans.When dogs make the movement, it seems to elicit a strong desire in humans to __44__ them. This would give the dogsthat moved their eyebrows more a selection advantage over others, reinforcing the trait in __45__ generations. The findingsshow how important faces can be in capturing our attention, and how powerful facial expression can be in social interaction.
【題組】41
(A) irritation
(B) evolution
(C) migration
(D) realization