舞蹈是一种普遍共有的文化表现。在许多文化里，舞蹈在节庆和宗教活动里占据中心地位。舞蹈还可以在求爱过程中起重要作用。

Sentence No. 1 Walking is a skill people learn as babies. But, it is not as simple as that. Every year, some 15 thousand American pedestrians are killed by motor vehicles.

Sentence No. 5 Dancing is a cultural universal. In many cultures it often has a central place in festive or religious events. Dancing may also play an important part in courtship.