Mark lived in a village far away. One day he became very ill and everyone thought he would 1 soon. They sent for a doctor. Two days 2 the doctor came and looked over the sick man.3 asked for a pen and some paper to write down the name of the medicine. But there was no pen 4 paper in the village, because no one could write.

    The doctor 5 up a piece of burnt wood from the fire and wrote the name of the medicine on the 6 of the house. “ Get this medicine for him, and he will get 7 soon. ” he said.  Mark's family and friends did not know8 to do. They could not read the strange words. Then a young man 9an idea. He took off the door of the house, put it on his carriage(马车) and drove to the nearest 10. He bought the medicine there, and Mark was soon well again.

关于下列命题：

①函数y=tanx的一个对称中心是（ $\frac{\pi }{2}$ ，0）；

②函数y=cos2（ $\frac{\pi }{4}$ ﹣x）是偶函数；

③函数y=4sin（2x﹣ $\frac{\pi }{3}$ ）的一条对称轴是x=﹣ $\frac{\pi }{12}$ ；

④函数y=sin（x+ $\frac{\pi }{4}$ ）在闭区间﹣ $\frac{\pi }{2}$ ， $\frac{\pi }{2}$ 上是增函数．

写出所有正确的命题的题号____．

 看图列式计算。

     ____                   ____

英国作家夏洛蒂•勃朗特说：“慎重和检点就是女孩子最好的才智。”这告诫女孩子在与人交往时要注意（    ）

①保持庄重，不丧失警惕                    ②学会自律，学会自我保护 

③学会打扮自己来引起其他人的注意   ④不要与男性接触