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.

阅读理解
阅读理解.
     The Museum of Chinese in America is very popular with people.
                                     MOCA Hours
Monday11 am-5 pm
Thursday11 am-9 pm
Friday11 am-5 pm
Saturday & Sunday10 am-5 pm
     The Museum is closed to the public on Tuesday and Wednesday, but the special days below are
open from 9 am to 9 pm.
                         MOCA Holiday Hours 2012
New Year's DaySunday 1/1
Lunar (农历的) New YearMonday 1/23
Thanksgiving DayThursday 11/22
Christmas DayTuesday 12/25

                                             Admission
General admission (门票)$ 7
Seniors ( 65 + w / ID ) and students ( w / school ID )$ 4
Children under 12 in groups less than 8free
MOCA membersfree
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
单项选择题