----I’d like grapes and pears. ----Oh, I only need orange juice. A. some; a few B. a few; some C. a little; few D. a little; a few 答案:B 小明用两节干电池和一个灯泡连接了如图所示的电路,用来探究铅笔芯AB的导电性。闭合开关后发现灯泡能发光,这说明铅笔芯是__________,发出微弱的光说明有________通过灯泡,当导线夹向左移动时灯泡亮度增大,说明铅笔芯接入电路的电阻_______(选填“增大”或“减小”),这个实验说明导体的电阻跟导体的__________有关