用所给词的适当形式填空。(1)What’s your____ (high)?(2)The boys often go____ (swim) in that river in summer.(3)Nobody ____ (like) his new look.(4)Many young people want to be____ (sing).(5)He wears____ (glass) every day. He thinks that’s very cool.
图中的实线表示电场线,虚线表示只受电场力作用的带电粒子的运动轨迹,粒子先经过M点,再经过N点,可以判定( )
下图表示治理汽车尾气所涉及反应的微观过程。下列说法正确的是( )
下列各句中没有语病的一句是( )