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题库 / OG2018V-SC-275
The Anasazi settlements at Chaco Canyon were built on a spectacular scale, with more than 75 carefully engineered structures, of up to 600 rooms each, were connected by a complex regional system of roads.
scale, with more than 75 carefully engineered structures, of up to 600 rooms each, were
scale, with more than 75 carefully engineered structures, of up to 600 rooms each,
scale of more than 75 carefully engineered structures of up to 600 rooms, each that had been
scale of more than 75 carefully engineered structures of up to 600 rooms and with each
scale of more than 75 carefully engineered structures of up to 600 rooms, each had been
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B选项：connected 做整个句子的谓语
C选项：each做一个新句子的主语；that had been connected by中that作为had been connected by的主语，所以没有动词；
D选项：此句子是这个题的意思发生改变，暗示the scale是由structures组成;and with each前面是600 rooms, 表示每个房间都是由。。。connected.
E选项：同c选项；each指代有问题
不是吧 b里不是有were做谓语了吗 connected是过去分词修饰each room
A were 前没有主语C 时态had been 错
D and 前后不平行
E had been 错连接两个完整句子没有练词
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The Anasazi settlements at Chaco Canyon were built on a spectacular scale, with more than 75 carefully engineered structures were connected by a complex regional system of roads.
with...是独立主格，修饰补充a spectacular scale。这个规模有超过75个被一个复杂的道路系统相连的建筑，
插入语of...是修饰的这个structure，每个建筑有超过600个房间
the USA comprises 50 states, each of which is united by a federal government --> wrong (the implication is that each state has its own federal government)
the USA comprises 50 states, all of which are united by a federal government --> correct
the USA comprises 50 states, (all) united by a federal government --> correct, whether you have 'all' or not
当时纠结B,D，感觉B each后面那个逗号怪怪的。。
理解题意一下，connected 应该是修饰前面的structures 而不是紧跟的each，"of up to 600 rooms each" 就是一个完整的修饰语。
根据with each能判断D错了，独立主格里面这两个只能单独使用登录 或 注册 后可以参加讨论
with表伴随，进一步修饰built这个动作，句子结构应该是The Canyon were built on a scale with structures connected by a system. of up to 介词短语修饰 structures. connected的是structures登录 或 注册 后可以参加讨论
A B修饰scale都用的非限制性修饰 CDE 用的是限定性，宏伟的规模肯定是可以被分为超过75个结构和不超过75个的，那么按照逻辑判断应该排除AB，同时后面的structure 也可以被600个房间分类，但是本题B是正确答案，都用的是非限制性修饰。求解