在函数y=2sin（ωx+φ）（ω＞0）的一个周期上，当x= $\frac{\pi }{6}$ 时，有最大值2，当x= $\frac{2\pi }{3}$ 时，有最小值﹣2，则ω=____

“让消费更有尊严”。包括三层内涵，一是消费者要有尊严，坚决维护自身的合法权益；二是商家要有尊严，当一名诚信、守法的经营者；三是市场监管者要坚定维护市场的尊严。让消费更有尊严，消费者需要（    ）

①充分行使消费者的权利，选择适当合理的消费行为                        ②主动学习和掌握有关消费知识，成为一个聪明的消费者

③要充分运用自己的消费知识和法律知识，防止侵权行为的发生    ④制定新消法，惩罚不法经营者

阅读理解
B
    Hello!I'm Kate．I want to talk about my smart phone(智能手机)．My smart phone is white．It's from my uncle Sam．He works in New York and comes back to London every December．I like mv smart phone．It is useful.
    The school rules don't allow(允许)us to take smart phones to school,so I usually use it after school or on the weekend．When I go out with my friends，I like keeping it in my bag．So my family can call me at any time．When I don't go to school．I like to call my friends to talk to them，or ask them for help with my study．I'm not very good at math，so I put an APP(应用软件)about math in my smart phone to help me． It is fun and helpful．I also use the smart phone to do some reading，play games，and watch movies．Isn't it great?
    Sometimes smart phones are not good for people．Some people spend too much time on it．I like my smart phone and I know how to let it help me. It's my good friend．
根据材料内容选择最佳答案。

如图，在梯形ABCD中，AB∥DC，∠B=90°，且AB=10，BC=6，CD=2．点E从点B出发沿BC方向运动，过点E作EF∥AD交边AB于点F．将△BEF沿EF所在的直线折叠得到△GEF，直线FG、EG分别交AD于点M、N，当EG过点D时，点E即停止运动．设BE=x，△GEF与梯形ABCD的重叠部分的面积为y．

下列表述正确的是
①归纳推理是由部分到整体的推理；②归纳推理是由一般到一般的推理；③演绎推理是由一般到特殊的推理；④类比推理是由特殊到一般的推理；⑤类比推理是由特殊到特殊的推理.