A:at, price
B:in, price
C:at, cost
D:at, selling
读图,结合所学知识完以下问题。
以下说法:①两点之间的所有连线中,线段最短;②相等的角是对顶角;③若AC=BC,则点C是线段AB的中点;④长方体是四棱柱;⑤不相交的两条直线叫做平行线;⑥过一点有且只有一条直线与已知直线垂直.其中正确的有( )
为什么雷雨天打开收音机听广播时,会有“咔嚓、咔嚓”的声音杂在节目中?
They were shocked at the____(令人恐惧的) news that they had cheated so much money.