Consider each of the choices separately and select all that apply. According to the passage, Sinodonty and Sundadonty differ答案解析-雷哥GRE

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Findings in biological anthropology suggest that Native Americans’ ancestors probably came to the Americas from northeastern Asia. Turner, for example, has studied the dentition of prehistoric and living Native Americans and northeastern Asians. Based on approximately twenty dental traits, including tooth-crown shape and number of roots, he has defined an overall dental pattern called Sinodonty, which includes three-rooted lower first molars and shovel-shaped incisors. This distinctive pattern is shared among most Native Americans and people from northeastern Asia, but is not found in people who originated in southern Asia, Africa, or Europe. Another less complex pattern—Sundadonty—is shared among the people of southeastern Asia and is also found in prehistoric American populations, but Turner believes that widespread Sinodonty demonstrates most Native Americans’ northeastern Asian origins.

Consider each of the choices separately and select all that apply.

According to the passage, Sinodonty and Sundadonty differ from one another in that Sinodonty

A. has been found among prehistoric Native American populations, while Sundadonty has not. B. is a more complex dental pattern than Sundadonty is C. occurs frequently in modern Native American populations, while Sundadonty does not.

正确答案： BC 耗时：

该题平均耗时：52秒，平均正确率：37 %，难度系数：4 。该题由网友lgw20422提供。更多GRE题目请点击上传

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当前版本由314681irjrt更新于2023-07-13 15:27:45 感谢由314681irjrt对此题目的解答所做出的贡献。

A选项错误：Sindonty 和Sundaonty 都出现在史前的北美土著人中。 B选项和C选项：在文中均有定位。 B选项：Another less complex pattern—Sundadonty— C选项：the dentition of prehistoric and living Native Americans and northeastern Asians 是Sindonty的特征；而 Sundadonty 只在史前的美国土著中出现。

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1065681pd

我很困惑，老实说BC选项中，我看到了文章中的这句话并且我判断不选C的原因恰恰是and is also found in prehistoric American populations；我理解的是文章说了Sun这个牙的形态在史前American中发现了，却没说“只在史前发现”，考虑到我经常把文章没提的但是推演的部分选上往往出错，提醒自己文章没明确说就不能自己发挥，可是这题答案就把C算进去了，我很困惑，为什么呀

4楼 | 2023-11-30 11:08:36 回复

212692lgty 回复 212692lgty 我也，我觉得从文章中根本不能判断Sun在现代没有出现…

2024-02-01 21:47:06 回复

金饭粒

widespread其实就是在提示你一个比另外一个更加广泛

3楼 | 2023-11-03 22:40:06 回复

231166dywt

看清定位句！sun是在东南亚和prehistoric美被找到，也就是说modern美没找到

2楼 | 2023-11-02 18:06:11 回复

254082brb

为什么在这个界面看不到问题呀

1楼 | 2023-10-17 12:29:42 回复

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