2. 外语
  3. Developed by Pennsylvania’s Palatine Germans about 1750, Conestoga wagons, with high wheels capable of crossing rutted roads, mu

Developed by Pennsylvania’s Palatine Germans about 1750, Conestoga wagons, with high wheels capable of crossing rutted roads, mu

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问题 Developed by Pennsylvania’s Palatine Germans about 1750, 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.
选项 A、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、wagons, with high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie, and with a floor that was curved upward at both ends to prevent
C、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
D、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、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
答案D
解析 Logical predication; Parallelism; Grammatical construction
The main subject of this sentence is Conestoga wagons and the main verb is had. The opening participial phrase describes the origin of the wagons, and the rest of the sentence describes the features they possessed. These features must be presented in parallel form as objects of the verb had. The sentence first presented is a fragment; the prepositional phrase with... leaves the subject Conestoga wagons without a verb. When the verb had finally appears, a new subject they has been unnecessarily introduced.
A The subject wagons is without a verb.
The introduction of a new subject they is unnecessary. Given the absence of had after wagons and of a comma after prairie, it is also ungrammatical.
B This version of the sentence has no main verb for the subject wagons.
C As in (A) and (B), this version of the sentence fails to provide a main verb for the subject wagons.
D Correct. The main verb had completes the subject wagons and accommodates the two direct objects, wheels and a floor. The comma after prairie helps to clarify that floors is a direct object of had, parallel with high wheels.
E The referent for it is ambiguous. The correct answer is D.
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