prep 1# 65 主谓一致 与题意理解

65.  
            Developed by Pennsylvania's Palatine Germans about
1750, they made Conestoga wagons with high wheels capable of crossing rutted
roads, muddy flats, and the nonroads of the prairie and they had a floor curved
upward on either end so as to prevent cargo from shifting on steep grades.

(A) they made
Conestoga wagons with high wheels capable of crossing rutted roads, muddy
flats, and the nonroads of the prairie and they had a floor curved upward on
either end so as to prevent （分词短语做状语：它的逻辑主语应该为主句主语）

(B) they made
Conestoga wagons, which had high wheels capable of crossing rutted roads, muddy
flats, and the nonroads of the prairie, and floors curved upward on their ends so that they prevented（they指代的应该是floors
，so
that罗嗦，用to do 表示目的最好）

(C) Conestoga wagons, with high wheels capable of
crossing rutted roads, muddy flats, and the nonroads of the prairie, and had a
floor that was curved upward at both ends to prevent（没有谓语动词）

(D) Conestoga wagons had high wheels capable of crossing
rutted roads, muddy flats, and the nonroads of the prairie, and a floor that was curved upward at both ends to prevent

Floor指的是什么，我查字典比较合理的即使“底层”这个解释。。。不过也很奇怪。再有，很多个wagon，就一个啊floor，逻辑不是很合理吧…

(E) Conestoga wagons had high wheels capable of
crossing rutted roads, muddy flats, and the nonroads of the prairie and floors
curving upward at their ends so that it
prevented

MM可以去置顶里看主谓一致的帖子

只要求主语和谓语一致 宾语的单复数并没有影响

floor的话我觉得的是底板的意思 大概是类似滑板的一种东西吧