Everybody likes music. Everybody can make sounds1a way by singing 2playing an instrument. Many 3 are developing as people find 4 how to sing in different ways. There are many kinds of music5. Then you are sure to find some music that will greatly interest you.

    Music has meaning 6everyone. The old and the young, men and women all 7it. It can 8 people happy or sad. In our modern world, radios and televisions supply us with a constant flow of music, giving us enjoyment.9in a music lesson or at a concert, music means different things to different people. Music belongs to the 10world.

如图，已知抛物线y₁=﹣2x²+2，直线y₂=2x+2，当x任取一值时，x对应的函数值分别为y₁、y₂．若y₁≠y₂，取y₁、y₂中的较小值记为M；若y₁=y₂，记M=y₁=y₂．例如：当x=1时，y₁=0，y₂=4，y₁＜y₂，此时M=0．下列判断：
①当x＞0时，y₁＞y₂； ②当x＜0时，x值越大，M值越小；
③使得M大于2的x值不存在； ④使得M=1的x值是$-\frac{1}{2}$或$\frac{\sqrt{2}}{2}$．
其中正确的是（　　）

下列词语中，没有错别字的一组是（  ）