The reason_________ he didn't come was _________ he had to take care of his sick mother. A. why ; that B. why ; which C. which ; why D. that ; for 答案:A本题是一道定语从句与宾语从句的交叉考查。why引导的从句作为句中的定语,that引导的从句作为句中的宾语。
如图是体育摄影中“追拍法”的成功之作,摄影师眼中的滑板运动员是清晰的,而背景是模糊的,摄影师用自己的方式表达了运动的美.请问摄影师选择的参考系是( ) A.大地 B.太阳 C.滑板运动员 D.步行的人