【Thisisapictureofaclassroom．Theclassroomisbigandclean．Youcanseeateacher'sdesk，fifteendesksandsixteenchairs．Youcanseeagirlandaboy，too．Sevenbooksareontheteacher'sdesk．Apencilboxisonthedesk．Threepen】

　　This is a picture of a classroom．The classroom is big and clean．You can see a teacher's desk，fifteen desks and sixteen chairs．You can see a girl and a boy，too．

　　Seven books are on the teacher's desk．A pencil box is on the desk．Three pens and two rulers are in the pencil box．A schoolbag is behind the chair．A basketball is on the floor．

　　The girl is Lucy，and she is eight．The boy is Mike，and he is nine．They are in Class 2，Grade 1．They are friends．Their teacher is Miss Green．She is not here．

　　46．---What is the picture of？

　　---It's a picture of___．

　　A．boys and girls

　　B．desks and chairs．

　　C．a classroom

　　47．---Where are the three pens？

　　---They are___．

　　A．on the teacher's desk

　　B．in the pencil box．

　　C．on the floor

　　48．Is Lucy nine？___

　　A．Yes，she is．

　　B．No，she isn't．She is eight．

　　C．I don't know．

　　49．What is on the floor？___

　　A．a schoolbag

　　B．A basketball

　　C．A pencil box

　　50．Which sentence is Not true（正确）？___

　　A．The classroom is big and clean．

　　B．Miss Green is Lucy and Mike's teacher．

　　C．Mike is not in Class 2，Grade 1．