长期国债期货合约到期时，卖方可用以交割的并不仅限于标准化的债券，只要是剩余期限不少于15年的美国长期公债券都可作为可交割债券。
参考答案：对
阅读理解
My name is Li Ming. I am a Chinese boy. I’m twelve years old. There are 5 people in my family.
My father is a doctor. He works in a hospital. My mother is a teacher. She teaches in a high school. Now we live at Zhanghua Road in Beijing. I’m a student of Grade Seven. My little sister Li Li is only four years old. My grandparents live with us. They look after Li Li at home.
阅读短文，回答问题。
1. Where does Li Ming live?
________________________________________________
2. What does Li Ming’s mother do?
3. Where does his father work?
4. Who is the only(唯一的) student in his family?
5. Who looks after Li Li?
在冰雪道路上行车时，机动车的稳定性降低，加速过急时车轮易空转或溜滑。
father is a doctor. He works in a hospital. My mother is a teacher. She teaches in a high school. Now we live at Zhanghua Road in Beijing. I’m a student of Grade Seven. My little sister Li Li is only four years old. My grandparents live with us. They look after Li Li at home.