题目选项分析

比较两个句子语法结构语义，选出最佳答案：

Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs have been dated as being 3.47 billion years old and thus evidence of the earliest known asteroid impact on Earth.

Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs have been dated at 3.47 billion years old and thus are evidence of the earliest known asteroid impact on Earth.

写下分析过程，便于复习“吃透”这个句子：

答对用户笔记

0人: 四战740 2020-11-06 01:18:56

and thus 后面名词往前找平行只有 rock samples 缺谓语

0人: Penny520 2019-10-24 08:19:10

as being这个用法用在省略句子主语的时候，而不能表示时间状语
thus are作为连接词，还是在形容前面的rock samples

0人: lucylivebox 2019-09-08 20:04:44

比较分析出现解题思路：
as +doing （conj +省略主语出现句子）：时间状语上不存在
at +adj +名词短语（prep +noun ）
as
thus are 做连接词应该存在

0人: corrine1006 2019-04-05 18:43:26

dated as being is IDIOMATIC

题目基本信息

所属科目：语法SC
题目来源1：OG12-140
题目来源2：OG15-140
题目来源3：OG16-140
题目来源4：OG17-807
题目来源5：GWD-317
题目来源6：PREP08 Test 2-215
题目来源7：OG18-807
题目来源8：OG19-807
题目来源9：OG20-907
题目来源10：OG2022-995

难度：难