阅读文章，回答问题。（10分）
Hello, boys and girls. Let me tell you something about our art room. In my school, there is an art room. It is clean. (1) There is a teacher and twenty students in it now. There are twenty desks in it. (2)Two desks ______ big and eighteen desks are _____. There are three balls and five boxes on the small desks. On the small desks, there are eighteen pencils and fifteen rubbers. There are thirteen pictures and a poster on the wall. We are very happy in the art room.
小题1: 把（1）处下画线的句子译成中文。
                                                               
小题2:在（2）处填上适当的词，使句子通顺正确。          __________
小题3:回答问题：What’s on the small desks?
                                                              
小题4:在文中找出与所给句子意思相近的句子。We have an art room in our school.
                            .
小题5:在文章中找出主题句（中心句）将其写在下面横线上。