已知复数乘法（x+yi）（cosθ+isinθ）（x，y∈R，i为虚数单位）的几何意义是将复数x+yi在复平面内对应的点（x，y）绕原点逆时针方向旋转θ角，则将点（6，4）绕原点逆时针方向旋转$\frac{\mathrm{\pi }}{3}$得到的点的坐标为____ ．

今朝莘莘学子，明朝各奔东西。我们即将完成初中学习生活，面对人生新起点。在漫长的人生路上，我们要（    ）

①把个人理想和社会发展的现实需要结合起来      ②让父母给自己决定未来的人生道路

③树立正确的职业观和人才观                                  ④培养创新精神，具有奉献精神

从2011年开始，联合国将在每年的4月20日举办“中文语言日”纪念活动。下列关于汉语说法正确的是（　　）

    Mr Clarke works in a middle school. He likes reading and often1some books from the library. He enjoys2to the radio every morning and reading 3 after supper. So he knows much and teaches well. His 4 worship (崇拜) him very much. Mike, Mr Clarke's little son, is only nine. He5 likes reading books. And he often asks his father some questions. Mr Clarke always thinks he's too 6to understand him and chooses the easiest ones 7. Of course the boy is not happy with it.

    One day Mike reads8about the electric lights (电灯) and is9in it. When his father tells him to do some housework, he is thinking of it. He asks him 10 questions, and his father answers all. Then his father says proudly (自豪地), “Fathers always know more than sons!” The boy thinks11 a while (一会儿) and says,“12 !”

    “Oh? Why?”

    Mike doesn't answer 13 asks instead (反而), “Who invents the electric lights?”

    “Thomas Edison ”answers Mr Clarke.

    “Why doesn't his 14 invent(发明) them, then?”

    Looking at his son, Mr Clarke doesn't know15to answer!