问题
填空题
抛物线y=a（x-a）2+5-a与抛物线y=-2x2+4x的形状相同，且开口方向相同，则此抛物线的解析式为______．
答案
∵抛物线y=a（x-a）2+5-a与抛物线y=-2x2+4x的形状相同，
∴a=-2，
∴此抛物线的解析式为y=-2（x+2）2+5+2，
即y=-2（x+2）2+7．
故答案为：y=-2（x+2）2+7．
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抛物线y=a（x-a）2+5-a与抛物线y=-2x2+4x的形状相同，且开口方向相同，则此抛物线的解析式为______．
∵抛物线y=a（x-a）2+5-a与抛物线y=-2x2+4x的形状相同，
∴a=-2，
∴此抛物线的解析式为y=-2（x+2）2+5+2，
即y=-2（x+2）2+7．
故答案为：y=-2（x+2）2+7．
| 阅读理解. | ||||||||||||||||||||||||||||||
The Museum of Chinese in America is very popular with people.
open from 9 am to 9 pm.
| ||||||||||||||||||||||||||||||
| 1. If Lisa wants to visit the MOCA on weekend , she can't visit it at a _______. | ||||||||||||||||||||||||||||||
| A. 9 o'clock in the morning B. 11 o'clock in the morning C. 10 o'clock in the morning D. 1 o'clock in the afternoon | ||||||||||||||||||||||||||||||
| 2. The MOCA is open and closed at the same time on _______. | ||||||||||||||||||||||||||||||
| A. Thursday and Friday B. Monday and Friday C. Friday and Saturday D. Monday and Thursday | ||||||||||||||||||||||||||||||
| 3. There are _______ special days in 2012 in the passage. | ||||||||||||||||||||||||||||||
| A. two B. three C. four D. five | ||||||||||||||||||||||||||||||
| 4. The MOCA is closed on _______. | ||||||||||||||||||||||||||||||
| A. Monday and Friday B. Tuesday and Wednesday C. Saturday and Sunday D. Tuesday and Thursday | ||||||||||||||||||||||||||||||
| 5. If Mr. Smith wants to visit MOCA with his wife and a 6 -year-old son, lie will spend _______. | ||||||||||||||||||||||||||||||
| A. $ 18 B. $ 7 C. $ 11 D. $ 14 | ||||||||||||||||||||||||||||||