新36套 ex5 求教第一篇长阅读

zhj0735UID: 2561218

新36套 ex5 求教第一篇长阅读，就是浮游动物和浮游植物之间的捕食关系的那篇文章。原文就不贴出来啦~
第5题有疑问：According to the passage, Hargrave and Geen did which of the following in their experiments?
(A) They compared the grazing rates of individual zooplankton species in the laboratory with the natural grazing rates of these species.
(B) The hypothesized about the population density of grazers in natural habitats by using data concerning the population density of grazers in the laboratory.
(C) They estimated the community grazing rates of zooplankton in the laboratory by using data concerning the natural community grazing rates of zooplankton.
(D) They estimated the natural community grazing rates of zooplankton by using data concerning the known population density of phytoplankton.
(E) They estimated the natural community grazing rates of zooplankton by using laboratory data concerning the grazing rates of individual zooplankton species.

我选C，答案选E。
我认为这篇文章H和G两个人做的实验创新点在于他们观测到了自然条件下的不是状况，也就是C告诉我们滴。E选项单独一个浮游植物和群体浮游植物的捕食情况不能做直接比较嘛。
求拍~

azurejayUID: 2770739

L37说“Studies by Hargrave and Geen estimated natural community grazing rates……”，可是C选项说的是“They estimated the community grazing rates
of zooplankton in the laboratory……”
我觉得C和E的意思是相反的，一个是说用natural data估实验室的grazing rates，一个是用laboratory data的估natural rates

cinkieUID: 2933620

Studies by Hargrave and Geen estimated natural community grazing rates by measuring feeding rates of individual zooplankton 40 species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers.

把这个句子分析清楚就好了，H和G计算自然群落的grazing rate 通过测量个体的feeding rates in laboratory，然后再计算field condition下的grazing rate，用已知的grazers密度。

一看答案首先就该在DE中选，要求的是natural grazing rate，当然就是E了啦

allenbai01UID: 3134768

文中说的是估计自然的，C选项是估计实验室中的

pfe-719@163.comUID: 3251439

为什么我觉得D也对啊，它是用个体在实验条件下的rate乘以群体在自然条件下的密度来估计群体自然条件的rate，那D也是没错的啊

aixi1991UID: 3235875

5# pfe-719@163.com
D错在known population density of phytoplankton。
不是phytoplankton啦，而应该是grazer.文中把grazer=zooplankton, 和phytoplankton=algae 老互换，很容易混淆。