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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？？
多谢了！！ |
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发表于 2003-8-21 13:46:00
