若﹣1,1⊆{x||x2﹣tx+t|≤1},则实数t的取值范围是( )
The findings support another study which showed that being happy ______ reduce the risk of heart disease.
小林因某事感到非常痛苦,他奔跑到无人处,放声大喊……这种调节情绪的方法叫( )