
注意题目的问法,是说在 within different habitats,影响P主导地位的因素是什么,注意是在不同的栖息地,那么定位句就不应该是最后一句,而是moreover那一句,只有那一句才说了在不同的栖息地P的主导地位的变化,而最后一句只是一个笼统的说影响所有Keystone status的content。
注意题目是:affects——影响P占主导地位的因素,
文中的比较点是wave-exposed 和 wave-sheltered这个环境因素的不同。
题目讨论 (6条评论)

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ziqi
Moreover, whereas P. ochraceus occupies an unambiguous keystone role on wave-exposed rocky headlands, in more wave-sheltered habitats the impact of P. ochraceus predation is weak or nonexistent, and at certain sites sand burial is responsible for eliminating mussels。这一句可以看出P的作用受wave shelter的影响。细节题要找到具体位置,不能笼统回答
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0 回复 2022-04-08 16:24:45
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286053m
Moreover, whereas P. ochraceus occupies an unambiguous keystone role on wave-exposed rocky headlands, in more wave-sheltered habitats the impact of P. ochraceus predation is weak or nonexistent, and at certain sites sand burial is responsible for eliminating mussels.
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0 回复 2020-08-16 12:10:53
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Sunnie22
注意题目是:affects——影响P占主导地位的因素 文中的比较点是wave-exposed 和 wave-sheltered这个环境因素的不同
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0 回复 2018-10-19 09:19:48
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Better vivi
whereas P. ochraceus occupies an unambiguous keystone role on wave-exposed rocky headlands, in more wave-sheltered habitats the impact of P. ochraceus predation is weak or nonexistent, 就是这句话,做错的原因是把问题想复杂了。。。。对A项有戒备心。。。。
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0 回复 2018-05-17 20:57:49
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xiaoyi
within different habitats
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0 回复 2017-02-06 21:36:06
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yanhairiluo113
从文中可知,P物种的基石物种的地位跟地点有关 A正确,符合文中意思 B错误,没有谈及地点 C错误,同上 D错误,与“种群大小”无关 E错误,与“种群的多样性”无关
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0 回复 2015-11-10 20:58:38