阅读短文，从A、B、C、D四个选项中，选出可以填入空白处的正确答案。
    Look at this picture. It is 1 nice classroom. In the picture, you can see a teacher's 2 on his desk. It's a Chinese book. Eight desks and eight chairs in the room. You can see a girl and 3 boys.
    The girl's 4 is Julia. She is eleven. The boy 5 a black hat is Tom. The other boy is Tony. They 6 the same coats and they are the same age. I 7 they are twins. Tom is a 8 boy. A book is in his hand. You 9 see the teacher . 10 is the teacher? He is taking the photo

徐州市某初中曹同学选用下面两幅地图进行研究性学习。据地图内容判断，该同学确立的研究主题应是（    ）

1949﹣1953年，新中国在巩固新生政权方面取得的成就有（　　）

①抗美援朝战争的胜利    ②建立起社会主义的基本制度

③大陆基本完成土地改革   ④提前完成第一个五年计划