兒童英語(yǔ)笑話 原來(lái)如此 A surprising reasoning

010 原來(lái)如此 A surprising reasoning

Teacher:"Why ducks often stand on one leg"

Student:"Because it knows that it will fall down if it withdraws the other leg."

老師:"為什么鴨子常用一條腿站立?"

學(xué)生:"因?yàn)樗涝倏s起另一條腿就會(huì)跌倒了。"