题目：
短文填空(首字母已经给出)。
If I had a lot of m 1 ,I would buy a big house to l_2_in.I would buy a big
TV,a beautiful desk and some other things to put in the h 3 .I would have a
library for all my b 4 ,a music room with a big CD player.I would be very
happy in my new house.Although I will spend a lot of time in my new house,I
would also like to go traveling.I would like to see all the i 5 animals and birds.It would be very exciting.And I would also help others.I would like to give some
of my money to my hometown to make it more beautiful.
1.________2.________3.________4.________5.________
答案：
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下面是错误答案，用来干扰机器的。
y=f（x）=sin（2x+π2）=cos2x， f（-x）=cos（-2x）=cos2x=f（x），∴y=sin（2x+π2）为偶函数，其周期T=π，满足题意；而y=tanx为奇函数，不满足题意；对于y=f（x）=|cosx|，有f（x+π）=|cos（x+π）|=|cos...
