摘要
语篇导读孩子是祖国的花朵和未来,关注孩子的健康和安全是每个成年人不可推卸的责任。目前,许多孩子都乘校车上学,而大部分校车使用的是柴油。这类校车对孩子们的健康是否有害呢?未来的校车又会是怎样的呢?
Do you take a school bus? If not, you might know someone who does. There are about 480,000 school buses on the road every day in the United States. Most of them run on diesel fuel. Diesel fumes pollute the air and they may also be bad for people's health or make health problems worse.
