— Here's your change.

— ________.

如图所示，一宽40cm的匀强磁场区域，磁场方向垂直纸面向里．一边长为20cm的正方形导线框位于纸面内，以垂直于磁场边界的恒定速度v=20cm/s通过磁场区域，取它刚进入磁场的时刻t=0，设逆时针方向为正． 在下列图线中，正确反映感应电流随时间变化规律的是（   ）

    What kind of music do you like? How do you ____when you listen to your favorite music? Do you think music can make people feel better or help ____learn?

    Jen Morgan is a music therapist ( 治疗专家). She works with children with disabilities (缺陷). Jen ____music to help them learn new things. She can also help them with their ____and memory (记忆力).

    There are different ____ for doing music therapy. Jen gets the children to listen to music and sing or play along. The children also enjoy moving to the music. Jen asks them to try to ____songs they like, too.

    Jen writes songs and uses them in her therapy work. "I've probably written more than 200 songs," she says. "I write songs about ____ about getting dressed, about flowers, about my favorite food – you name it Sometimes the children help me write songs."

    Jen loves her job ____a music therapist "I'm very lucky to have this job," she says. It's ____to see how music can help children with disabilities Often children are ____ when I first meet them. But they soon start having fun and enjoying the music. Music makes people feel good!