已知定义在R上的函数y=f（x）满足一下三个条件：

①对于任意的x∈R，都有f（x+4）=f（x）；

②对于任意的x₁，x₂∈R，且0≤x₁≤x₂≤2，都有f（x₁）＜f（x₂）；

③函数的图象关于x=2对称；

则下列结论中正确的是（　　）

A．f（4.5）＜f（7）＜f（6.5）

B．f（7）＜f（4.5）＜f（6.5）

C．f（7）＜f（6.5）＜f（4.5）

D．f（4.5）＜f（6.5）＜f（7）

用适当的介词填空

1. Sandy is wearing a cat's costume. Does she look ________ a cat?

2. Why don't you give the child a candle ________ a treat?

3. All the children are wearing special costumes ________ masks.

4. Jean's birthday party will start ________ 7:00 ________ the evening.

5. — When were you born? 

    — ________ 1993.

6. Uncle Liu often takes his dog ________ a walk after supper.

7. Children can get lots of money ________ Chinese New Year.

8. We'll leave for Shanghai ________ the morning of October 5th.

9. Simon began to go to school ________ seven.

10. Now they are ________ holiday in Huangshan.