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标题: 请教狒狒34题，谢谢！ [打印本页]

作者: Justinchen01 时间: 2007-7-29 15:07
标题: 请教狒狒34题，谢谢！

Conservationist: The population of a certain wildflower is so small that the species is headed for extinction. However, this wildflower can cross-pollinate with a closely related domesticated daisy, producing viable seeds. Such cross-pollination could result in a significant population of wildflower-daisy hybrids. The daisy should therefore be introduced into the wildflower’s range, since although the hybrid would differ markedly from the wildflower, hybridization is the only means of preventing total loss of the wildflower in its range.

34. Which one of the following is an assumption on which the conservationist’s reasoning depends?

A. The wildflower currently reproduces only by forming seeds.

B. The domesticated daisy was bred from wild plants that once grew in the wildflower’s range.

C. Increasing the population of the wildflower will also expand its range.

D. Wildflower-daisy hybrids will be able to reproduce.

E. The domesticated daisy will cross-pollinate with any daisy like plant.

这里的B选项我没有明白具体是什么意思。我理解的是必须要在这个windflower生长的范围之类，不然的话怎么授粉呢？是这样理解吗？

[此贴子已经被作者于2007-7-29 16:00:10编辑过]

作者: Justinchen01 时间: 2007-7-29 16:58

请教达人！

作者: karen_bai19 时间: 2007-7-29 17:20

B的意思是不是指这种与wildflower授粉的家养的daisy是从一种野生的植物繁衍而来，而这种野生植物其实也是归在这种需要授粉繁殖的wildflower的范畴内的，in short，他们是一个种族的：）

不知道这样的理解对不对呢，希望与大家一起探讨

作者: Justinchen01 时间: 2007-7-29 18:58
还有其他人有意见吗实在是不能把握他的意思如果按照ls的理解那就很自然的归为无关项了

作者: wangluxb 时间: 2007-8-3 11:43

3楼说的没错阿，我同意

作者: ringo5 时间: 2013-4-17 08:33

karen_bai19 发表于 2007-7-29 17:20
B的意思是不是指这种与wildflower授粉的家养的daisy是从一种野生的植物繁衍而来，而这种野生植物其实也是归 ...

也是不懂这一题，看了你的解释终于明白了~赞~

作者: ringo5 时间: 2013-4-17 08:41
：今天体育课9个女同学请假没来，由于不可能9个女同学在同一天都是生理期，所以她们有其他的原因。前提是：已经有人用了“生理期”这个请假原因了~

这个是HANSOMECD的解释~我觉得很赞~

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