Here ____ (is/are) some orange juice ____ (for/to) you.
显微镜可以观察微小的生物,是因为显微镜放大倍数较大,被观察的物体经过了( )
将一个重量为G的小球从空中某点静止释放,落在竖直放置的轻弹簧上,压缩到最低点后,再被弹起.在答题卡上画出小球在最低点时的受力示意图.
Parents advised me to communicate with my head teacher about the problem ________.