A:可燃冰用作燃料
B:“干冰”用于人工降雨
C:生铁铸造铁锅
D:铜用于制造导线
“千里之行,始于足下”,这句话告诉我们磨砺坚强意志要持之以恒、不懈努力。( )
—Is Andy than Amy?
—No.Andy isn't as as Amy.