如图所示,用电池对电容器充电,电路a、b之间接有一灵敏电流表,两极板间有一个电荷q处于静止状态.现将两极板的间距变大,则( ) A.电荷将向上加速运动B.电荷将向下加速运动C.电流表中将有从a到b的电流D.电流表中将有从b到a的电流 答案:BD解析:略 用所给动词的适当形式填空。
1. He is _______ (point) at the little red school.2. Are you________(have) fun?3. Jenny is not ___________(look) out the window.4. I _______ (see)a little pink pig.5. What _______(do) she see?