问题
填空题
请写出一个开口向上，对称轴为直线x=2的抛物线解析式______．
答案
根据题意设顶点坐标为（2，0），二次项系数a=1，
由顶点式，得y=（x-2）2．答案不唯一．
搜题请搜索小程序“爱下问搜题”
请写出一个开口向上，对称轴为直线x=2的抛物线解析式______．
根据题意设顶点坐标为（2，0），二次项系数a=1，
由顶点式，得y=（x-2）2．答案不唯一．
| 综合填空。（用方框里的单词填空，每词只能用一次。) | |
language 2 some of customs of the country. In Japan, when you enter someone's home, you should 3 your shoes. In Brazil, people never go out with their hair 4 . In Indonesia, you mustn't point to 5 with your foot. Don't eat 6 your left hand in Muslim countries, and don't touch a child 7 the head in Thailand. When people meet each other for the first time in 8 , they say "How do you do?" and shake hands (握手). 9 they do not shake hands after they haven't met for a long time 10 when they will be away from each other for a long time. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. |