已知平面上三点A,B,C满足|AB|=3,|BC|=4,|CA|=5,则((AB×((BC+((BC×((CA+((CA×((AB的值等于 .
-25
Sunset at Mount Huangshan is a beautiful scene, I’ll never forget.
A.one
B.it
C.what
D.that
商店出售商品都应当明码标价。