![IntheUnitedStates,childrenstartschoolwhentheyarefiveyea...]( "IntheUnitedStates,childrenstartschoolwhentheyarefiveyea...")
- 问题详情：IntheUnitedStates,childrenstartschoolwhentheyarefiveyearsold.Insomestatestheymuststayinschooluntiltheyaresixteen.Moststudentsareseventeenoreighteenyearsoldwhentheyleavesecondary（中等的）schools.TherearetwokindsofschoolsintheUnitedStates:publicsc...
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