早教吧 育儿知识 作业答案 考试题库 百科 知识分享

1.itisroundandsmooth,weseeitatthebeach,whatisit?2.itissmallandrough,weseeitatthebeach,whatisit?

题目详情
1.it is round and smooth,we see it at the beach,what is it?
2.it is small and rough,we see it at the beach,what is it?
▼优质解答
答案和解析
第一个是鹅卵石,第二个是贝壳或海螺