By devising an instrument made from a rod, wire, and lead balls, and employing u

游客2024-01-12 18

问题 By devising an instrument made from a rod, wire, and lead balls, and employing uncommonly precise measurements, in 1797-1798 Henry Cavendish’s apparatus enabled him to arrive at an astonishingly accurate figure for the weight of the earth.

选项 A、By devising an instrument made from a rod, wire, and lead balls, and employing uncommonly precise measurements, in 1797-1798 Henry Cavendish’s apparatus enabled him
B、In 1797-1798, by devising an instrument made from a rod, wire, and lead balls, and employing uncommonly precise measurements, Henry Cavendish’s apparatus enabled him
C、Henry Cavendish devised an instrument made from a rod, wire, and lead balls, and employed uncommonly precise measurements, and in 1797-1798 was able
D、Having devised an instrument from a rod, wire, and lead balls, and employment of uncommonly precise measurements, Henry Cavendish in 1797-1798 was able
E、By devising an instrument made from a rod, wire, and lead balls, and employing uncommonly precise measurements, Henry Cavendish was able in 1797-1798

答案 E

解析 Logical predication; Rhetorical construction
The core of this sentence’s idea is either the verb enable, which must have its logically correct subject Henry Cavendish’s apparatus, or be able, with the subject Henry Cavendish; these subjects must also be able to supply the correct subjects for any other verbs that have understood subjects. The sentence should also clearly express the two things that enabled Cavendish’s accomplishment (devising the instrument and employing precise measurement).
A Devising needs a subject supplied from elsewhere in the sentence, but the only available subject is the illogical Henry Cavendish’s apparatus (an apparatus does not "devise" anything).
B Devising needs a subject supplied from elsewhere in the sentence, but the only option is the illogical Henry Cavendish’s apparatus.
C Connecting the three parts of the sentence with two occurrences of and is awkward; the first two parts are best connected by and, but the final portion expressing what Cavendish achieved would be better expressed, for example, as a new sentence beginning, In 1797-1798, he employed.
D This variant seems to suggest, illogically, that Cavendish devised an instrument from several objects plus employment; using employed instead of employment of would be one way of correctly pairing his two actions.
E Correct. The verbs devising, employing, and was able have their correct logical subject {Henry Cavendish), and the actions of devising and employing are paired clearly, with by understood before employing.
The correct answer is E.

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