— Yes. He used to ________ the guitar, but now he is more _______ in playing soccer.
A:plays, interested
B:play, interested
C:play, interesting
D:playing, interest
如图(甲)是某物体运动的s﹣t图象,则图中能与之相对应的v﹣t图象是( )
在心脏和部分血管中能保证血液按一定方向流动的结构是( )
仿写成语。
吞吞吐吐 花花绿绿 ____、 ____、 ____