【OG20-P799-834题】Some anthropologists believe that the genetic homo_OG16

雷哥网GMAT>题库>OG16>句子改错SC >8643

句子改错SC-8643 【难度:680-700】 Time Cost00:00

报告题目错误

请选择错误类型：

请描述一下这个错误：

取消

建议使用官方纸质指南，查看对照完整题目

【OG20-P799-834题】

Some anthropologists believe that the genetic homogeneity evident in the world’s people is the result of a “population bottleneck”—at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation.

A

at some time in the past our ancestors suffered an event, greatly reducing their numbers
分析A选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

B

that at some time in the past our ancestors suffered an event that greatly reduced their numbers
分析B选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

C

that some time in the past our ancestors suffered an event so that their numbers were greatly reduced,
分析C选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

D

some time in the past our ancestors suffered an event from which their numbers were greatly reduced
分析D选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

E

some time in the past, that our ancestors suffered an event so as to reduce their numbers greatly,
分析E选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

该题平均耗时：2m56s ，平均正确率：53.3%。该题由网友t9LFCpgo提供。更多GMAT题目请

网友解析

暂无雷哥网文字解析

预约名师一对一题目解析课程

当前版本由 01**** 更新于2015-11-04 19:41:56 感谢由 01**** 对此题目的解答所做出的贡献。

划线部分是对believe的扩展部分。那么两个部分结构就要平行，believe that A ...that B ,且A,B要平行。
A 平行结构不对，缺少了that
B 正确
C some time 之前的at缺少，错
D that的平行结构错误
E that的位置错误

当前版本由周小雨更新于2016-09-16 15:55:58 感谢由周小雨对此题目的解答所做出的贡献。

og上对这道题的归类就是grammatical construction 和parallelism

并且在解释中说了这么一个结构scientists belive that X——（in other words）that Y。

题目讨论（10条评论）

提交

大开杀G

A是写法问题。。。clause+comma+-Ing 这里的-ing修饰逗号前的那个句子，若 clause+-ing 则 -ing修饰前一个名词

0 0 回复 2020-02-18 17:11:05
204700v回复大开杀G

这个修饰前面整个clause也没问题吧应该问题还是在parallelism不当吧缺that

0 0 回复 2020-02-20 11:15:12
大开杀G

c项被动不优

0 0 回复 2020-02-10 12:58:24
Vincent Hu

有毒吧这题 A选项破折号后面的表示对bottleneck的进一步解释说明最后的现在分词短语表示结果，不需要逻辑主语，表示前面句子的结果这样不行吗？为什么A错了

0 0 回复 2020-01-12 04:36:03
Vincent Hu回复 Vincent Hu

等等等等等.....感觉如果按A的话，后面多出来的reducing，确实感觉很别扭，即使作为结果状语能说的过去，但也存在修饰其他主语的可能，比如修饰believe那句话，比如修饰主语ancestor。这样一来确实不如B更严谨，还是选B吧哈哈哈哈啊哈

1 0 回复 2020-01-12 04:51:26
263222ax

---------deash 後面要憑平行看前面主詞的動詞帶誰

1 0 回复 2019-12-17 18:01:51
IAMEloise

对于C，曼哈顿第8版，Dash—的用法：很灵活，相当于强调作用的逗号，/分号；/冒号：/. 替代逗号，避免模糊歧义；不同于逗号，不必马上紧挨着前面要修饰的名词； … believe that X—that Y,—等于in other words；这里正是这道题C的用法

4 0 回复 2019-12-06 19:15:23
171533exp

Here the dash means "in other words". Besides, there all the words after dash should be used to explained the whole sentence rather than "population bottle neck". "at some time" or "sometimes" at both modifiers. While some time is a noun.

0 0 回复 2019-12-04 10:22:51
197003tru

一定要注意句子尾巴的ing，是主语发出的动作 It was not the ancestors but an event that 'reduced their numbers.'

0 0 回复 2019-11-04 10:10:19
JayneK

variation不是多样性的意思，是变异的意思。如果是a的话，reduction不能和变异搭配，语义不通

0 0 回复 2019-10-15 20:21:33
Lllllllla

如果that是修饰bottleneck，怎么会主谓宾齐全捏。

0 0 回复 2019-10-12 23:02:04
DWY回复Lllllllla

that不修饰bottleneck，that是和前面believe that平行

1 0 回复 2019-11-05 21:41:42
432442ba

我也觉得。

1 0 回复 2019-10-03 09:25:27