There're five members in my family—my parents , my grandparents, and me . My mother is a teacher. She teaches Chinese in our school. She likes music. My father is a teacher, too. He teaches art in the Guang Ming primary school. He likes going hiking. My grandmother is a worker. She likes reading books. My grandfather is a scientist. He likes playing chess. I am Betty. I'm in Shi Yan primary school. I like singing and dancing. Look! I have a happy big family. Isn't it?

“车慢慢，路漫漫，握好手中方向盘；情相伴，爱相伴，绷紧交通安全弦。”这样一批充满温馨话语的新式交通提示牌取代了传统的“禁止”“限制”等冷性、强制性词语的交通提示牌，这一细节的变化让人们倍感轻松。这说明（  ）

永定土楼是典型的客家民居，它用生土夯筑而成，依山偎翠，错落有致。土楼遍布该县的每个乡村，它们布局合理，与大自然和谐地融为一体，构成了神奇、古朴、壮观、美丽的画卷。据此回答下列各题。