估算215+87的结果大约是____.
—Yes, I just bought _______ the other day.
“环境保护”意识深入人心,下列关于酸雨的认识中错误的是( )
如图,AD⊥BC于点D,GC⊥BC于点C,CF⊥AB于点F,下列关于高的说法中错误的是( )