Leaves are found on all kinds of trees, but they differ greatly ________ size and shape. A. on B.from C. by D. in 答案:D考查介词搭配。在……方面不同:differ in ... 在“探究凸透镜成像规律”的实验中,点燃的蜡烛放在凸透镜前某位置处,在光屏上成一清晰的像.现将蜡烛向远离透镜方向移动一段距离,移动光屏后,又在屏上成一清晰的像.( )A.像变小,像距变大B.像变大,像距变小C.像变大,像距变大D.像变小,像距变小