题目

求下边组合图形表面积和体积。 答案：解：表面积：3.14×3×4+（5×5+5×2+5×2）×2=9.42×4+（25+10+10）×2=37.68+45×2=37.68+90=127.68（平方厘米）体积：3.14× (32)2 ×4+5×5×2=3.14×2.25×4+25×2=28.26+50=78.26（立方厘米）答：它的表面积是127.68平方厘米，体积是78.26立方厘米。根据句意和括号中所给中文提示，在句中空格处填写上正确的单词。【1】China has been making many great_____________ (成就) in every field these years, which amazes the world.【2】We are in ___________(同意) with their decision.【3】The famous writer_____________（采访）about his new works next week.【4】The kind boy was happy ___________(分享) his food with the hungry man.【5】Xiao Liu put his ___________(雨伞) in the corner of the room.