已知圆C：（x+3）²+y²=4及点A（3，0），Q为圆周上一点，AQ的垂直平分线交直线CQ于点M，则动点M的轨迹方程为____ 

如图甲是某种物体熔化时温度随加热时间变化的图象．

（1）这种物质的固体属于____ ；如图乙，在某一时刻，用温度计测得物质的温度为____ ℃．

（2）在BC段时，此物质处于____ 态．

    People in the West didn't know coffee or tea two hundred years ago. They were 1 to drink them because they thought coffee or tea could kill a person. Once the king of England decided to find out 2 it was true.

    There were two brothers in prison(监狱) at that time.They would be killed 3 a few days because they did wrong. The king said, "I shall let them live but they must drink coffee or tea to the end of their lives. One brother must drink coffee and 4 must drink tea every day." And they followed the king's words.

    They both lived many years. At last, the elder brother died when he was eighty-three years old.The younger one died a few years later. After that, people 5 that coffee and tea were not bad to man.