甲、乙两个质点运动的速度﹣时间图像如图所示，t=0时乙在甲前方s₀处，已知0﹣t₁时间内乙的位移为s，则关于甲、乙的运动，下列分析正确的是（   ）

    Alice and John are in the music club at their school. Alice plays the violin and John plays the drums. There are two groups in the school music club: the training (训练) group and the concert(音乐会) group. Everyone starts in the training group!

     "When I first started to play the violin it sounded terrible!" Alice said. "My family asked me to practice outside."

    After a year's practice, Alice and John play much better now. They are both in the concert group and they are learning more difficult music. "We're learning the music from the film Pirates of the Caribbean. It sounds fantastic!" John said. "Playing in the club with other kids is a lot of fun."

    Playing an instrument (乐器) is not only fun. It also helps children learn to concentrate (集中注意力). "I have to concentrate when I'm practicing," Alice said. "And now it's easier for me to concentrate on my schoolwork."

    Playing an instrument can also help children become more confident (自信的). As John said, "I was scared when I played in front of a lot of people for the first time. But now I really enjoy it."

2016年7月19日，教育部、司法部、全国普法办联合印发《青少年法治教育大纲》，要求法治教育要以宪法教育和公民基本权利义务教育为重点，覆盖各教育阶段，形成层次递进、结构合理、螺旋上升的法治教育体系。加强青少年法治教育是因为（    ）

看图写话。

 We have some shorts.