你想告诉妈妈,你们昨天在生日晚会上跳舞啦,可以说:A.We jumped at the birthday party yesterday.B.We danced at the birthday party yesterday.C.We played the trumpet at the birthday party yesterday.
一个零件的实际长度是7毫米,但在图上量得长是3.5厘米.这幅图的比例尺是( )
把米长的铁丝锯成相等的4段,每段是原长的( )
某超市有甲、乙、丙三种餐巾纸,甲种纸1元钱3包,乙种纸2元钱5包,丙种纸3元钱8包.那么( )纸每包的价钱最贵.A.甲种 B.乙种 C.丙种
一个半圆的周长10.28厘米,这个半圆的直径( )厘米.
一种商品先涨价,再降价10%,现价与原价相比( )