题目

计算下图的体积（单位：厘米） 答案：解：10÷2=5（厘米） 8÷2=4（厘米） 3.14×（52-42）×50 =3.14×（25-16）×50 =3.14×9×50 =28.26×50 =1413（立方厘米）听下面一段较长对话，回答以下小题。【1】How long will the speakers stay in the hotel？A. Three nights.B. Four nights.C. Five nights.【2】What is the probable relationship between the speakers？A. Tourist and guide.B. Teacher and student.C. Customer and assistant.