---To achieve a bright future, we should ___ study hard ___ keep in good health. ---I agree with you. A. not only, but also B. not, but C. neither, nor D. either, or 答案:A(2011?宜宾)一同学用双手竖直向上抛出一篮球,在篮球向上运动到最高点的过程中,不计空气的阻力,下列说法中正确的是( )A、篮球由于具有惯性而继续向上运动B、篮球继续向上运动是由于受到手的推力作用C、篮球只受到重力作用D、篮球的动能减小、重力势能增大,但机械能在减小