prep1-65 没讨论过的问题

65. (28041-!-item-!-188;#058&003495)
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
(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
(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
(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
(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

这个问题比较菜。。

正确选项是D，rutted roads, muddy flats, and the nonroads of the prairie, and a floor

这两个and不会有问题吗，白勇里面也说了，通常有两个and 的时候，其中一个会用with等其他词代替。

The structure is:

Conestoga wagons

had 1. high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie, (They all express different kinds of roads, therefore they should be parallel)

and 2. a floor that ...

In answer, E wrongly refers to "floors", and in fact, the author would like to refer to the ends of the wheels. In addition, E uses a clause so that, much more complex than D.

(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

这里D的结构是： Conestoga wagons had high wheels ..., and a floor ...

这里的名词并列结构中间有个逗号不是很奇怪么？？

一般来说不直接就是：I had an apple and an orange. 的并列形式么？中间不用逗号的。像这种“，and”后面应该是加完整句子啊。

盼解答！！！ 

up，盼解答！！！

E选项后面的错误太多 首先curve要用过去分词 因为是被动 其次 so that前面要是一个完整句 而E选项so that前面实际没有谓语 再次 it不对 要用they 第四 so that 引导目的状语从句 后面要接情态动词 would could can might等

逗号的问题 也许有一定道理 但在这题中 不是主要矛盾