题目

（题文） Many families live busy lives. Every week, the children have homework, sports, music lessons and club activities. The parents are busy, too. They work, do the housework, cook meals and drive their children to take part in activities. Some families do not have time to eat meals together more than once a week. Our community(社区) decided that it was time to take a break. After three weeks of planning, we took one night off. We called it“Family Night. It was a night for families to spend time together. Sports teams stopped their practices, and teachers did not give homework. On19．观察身边的物理现象-下列估测最接近实际的是（　　）A．人的正常体温是38℃B．我们所用物理教材的宽度约为18.50cmC．初中物理课本一页纸的厚度约为0.8mD．课桌的高度约为15m