图中有①________个三角形，②________个长方形，③________个梯形.
4.56÷2.3的得数保留一位小数是2.0。()
五(6)班图书角书架中的图书，故事书占1/3，漫画类占1/4，科技类占2/5，其余为文体类，文体类占这些书的几分之几?
I have a pen friend，and we always send e_____to each other by computer
Look at the sign. The library is _____ (close) from 1:00 p.m to 2:00 p.m.
