题目

－There are so many girls over there. Which one is your sister? －The one _________ hat is yellow.           A．who      B．whose      C．that       D．which    答案：B甲物体质量为100g，乙物体质量为20g．比较这两个物体的质量关系时，下列表达最确切的是（ ）A．甲的质量多，乙的质量少B．甲的质量高，乙的质量低C．甲的质量大，乙的质量小D．甲的物质大，乙的物质小