og13 sc78（og12 sc75)的B选项 求助~~

cncyl1

75 A proposal has been made to trim the horns from rhinoceroses to discourage poachers; the question is whether tourists will continue to visit game parks and see rhinoceroses after their horns are trimmed. (A)    whether tourists will continue to visit game parks and see rhinoceroses after their horns are (B)    whether tourists will continue to visit game parks to see one once their horns are (C)    whether tourists will continue to visit game parks to see rhinoceroses once the animals' horns have been (D)    if tourists will continue to visit game parks and see rhinoceroses once the animals' horns are (E)    if tourists will continue to visit game parks to see one after the animals' horns have been

答案选C
B选项为什么不对吖~~~~~~~~~
求NN解答啦~~~

maobaobao800

固定用法 Xwill happens once Y has been happened，Y一旦发生，X就会发生

vengeance

我觉得根据句意理解…有点类似cause and effect的意思…前提条件必定是已经发生过了的………而不是用一般现在时……而且B中的one指代不明

板栗在奋斗

their歧义，犀牛角应该是被除去，这里有个after~用完成式句意更通顺。