问题
补全对话，情景问答
| Read and answer. (找答语，将右栏答语前的序号填在前面的括号里。) | |
| A ( )1. Welcome to our school. ( )2. How much is the nice shirt? ( )3. Is this a teacher’s desk? ( )4. What are these? ( )5. What time is it? ( )6. How old are you? ( )7. Let’s go to the playground. ( )8. How many cows do you havew? ( )9. What’s the weather like today? ( )10. Whose dresses are those? | B A. It’s 7 o’clock. B. Thirty yuan. C. Great! D. I’m eleven. E. It’s sunny. F. They are my mother’s. G. Thank you. H. They are hens. I. Yes,it is. J. I have nine. |
答案
1-5 G B I H A 6-10 D C J E F
与椭圆
相交于A、B两点，该椭圆上点P，使得△PAB面积等于12，这样的点P共有（）。