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标题: 白勇—316页—46 [打印本页]

作者: 花子落落    时间: 2010-8-3 21:27
标题: 白勇—316页—46
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

答案为C,为什么用have been?

作者: 花子落落    时间: 2010-8-6 00:04
牛人们~帮忙啦~~~~




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