标题: 两个语法题请教？？ [打印本页] 作者: jeff2003 时间: 2003-8-21 13:46 标题: 两个语法题请教？？ 1。In geometry, an ellipse may be defined as the locus of all points_____distances from two fixed points is constant. A. which as the sum of; B. of the sum which; C.whose sum of whose; D.whose sum that the. 答案给的是C，水妖的语法上选B.哪位大侠给解释一下？
2。The piano is (a) stringed musical (instrument) in which the (strings) are strike, by felt-covered (hammers controlled) by a keyboard. 答案选C,很不明白？？