2013年5月30日，国家宗教事务局在广西南宁召开2013年宗教界"宗教政策法规学习月"活动专题会，总结2012年"学习月"活动情况，交流经验，动员部署2013年活动。我国宗教界从2012年起每年开展"宗教政策法规学习月"活动，通过多种方式组织宗教界人士和信教群众学习党和国家的宗教政策法规，增强国家意识、公民意识、法律意识。这说明（  ）

根据短文内容, 选择正确答案。

    Doing homework not only can help children master the knowledge they have learned, but also can train their abilities of finishing the work alone, planning the time and doing the duties. But some children don't like to complete the work. Why?

    Some children feel it is very difficult to do their homework, because they can't understand their teacher clearly, and cannot follow their teacher's teaching process (过程). Maybe there is something wrong with their intelligence.

    But some children's intelligence is normal. They are even cleverer, but they don't listen to the teacher carefully. It is hard for them to sit well and pay attention to anything.

    Some children love their teacher and then like the subject. Their interest depends on the teacher who teaches them. So every teacher should make children love you and the subject you teach. So they can do their homework happily.

给出下列命题：

①存在实数α，使sinαcosα=$\frac{\sqrt{3}}{2}$

②函数y=sin($\frac{3}{2}\mathrm{\pi }$-x)是偶函数

③x=$\frac{\mathrm{\pi }}{8}$是函数y=cos(2x+$\frac{3}{4}\mathrm{\pi }$)的一条对称轴方程

④若α、β是第一象限的角，且α＜β，则sinα＜sinβ

其中正确命题的序号是____