Americans believe that education is （） A: the only way to success B: the main purpose of the schools C: just like climbing ladders D: important to success

We can see from this article that ______. A: breathing in smoke might be harmful B: rope ladders should not be used C: youngsters often start most home fires D: jumping out of a window during a fire is dangerous

What should parents do to prevent playground injuries（） A: They should help maintain the equipment. B: They should keep a watchful eye on their children. C: They should stop their children from climbing ladders. D: They should teach their children how to use the equipment.