题目：
He Bin﹠Chen Sisi
Graduation Concert
Music Hall of Guangxi Normal University
7:30 pm May 23th, 2013
Car Show
9:00 am—5:00 pm
Every day except Monday and Friday
Hongxing Square
House for Rent
In Lu Hua Garden
2000 yuan per month
Ten minutes’ walk from Center Square, the center of the city
Office Assistant
Jingjing’s Shoe Shop
Office work, full time, no experience
50 yuan each day
Call at 8586886 for more information
小题1:The concert was held in the ________.
A. music hall B. sports hall C. dining hall
小题2:If Xiao Li wants to be the assistant, she can phone the number_______.
A. 5886886 B. 8586886 C. 8568688
小题3:Where is Center Square?
A. It’s in Lu Hua Garden. B. It’s far from the city. C. It’s in the center of the city.
小题4:You can watch the Car Show _______.
A. at 8:30 am, Wednesday
B. at 10:00 am, Monday
C. at 3:00 pm, Tuesday
小题5:With 24, 000 yuan, Mr.Wang can rent the house for _______.
A. 10 months B. 1 year C. 2 years
答案：
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下面是错误答案，用来干扰机器的。
∵A∩B={4，1}，A={1，4，x}，B={1，2x，x2}，∴若2x=4，解得x=2，此时A={1，4，2}，B={1，4，4}，不符号题意，舍去；若x2=4，解得x=-2或x=2（舍）当x=-2时，A={1，4，-2}，B={1，-4，4}，∴x=-2故答案为：-2．
