Youth has been praised by many people. They believe that it is the most precious time of one’s lifetime, because youth stands for young age a...

假如一个孩子正在试图打开一个罐头，然后他的父母建议他可以敲击一下罐头底部。那么，这位孩子可能会突然生气，认为父母总是在管他的事。从发展的角度来看，...