2. 职称英语
  3. By using a process called echolocation to analyze the echoes of the high-pitched

By using a process called echolocation to analyze the echoes of the high-pitched

游客2025-02-25  1
问题 By using a process called echolocation to analyze the echoes of the high-pitched sounds they produce, bats can determine not only the distance to an object, but they also can determine its shape and size and the direction in which it is moving.
选项 A、can determine not only the distance to an object, but they also can determine
B、not only can determine the distance to an object but also
C、can determine not only the distance to an object but also
D、not only can determine its distance from an object but also
E、can determine not only their distance from an object, but they can also determine
答案 C
解析 Parallelism; Logical predication
This sentence explains that bats’ echolocation allows them to determine both the distance to an object and other pieces of information. The correct way to construct this sentence using a correlative conjunction is to follow not only and but also with the same parts of speech. Using nouns to indicate all the kinds of information bats gain through echolocation provides parallel grammatical structure and concise wording: not only distance, but also shape, size, and direction.
A Introducing the second main clause they also can determine makes the sentence wordy and disrupts the correct formation of the correlative conjunction not only, but also.
B The correlative conjunction is used incorrectly because not only is followed by a verb, while but also is followed by a list of nouns.
C Correct. This sentence concisely uses not only, but also to connect a series of nouns.
D The correlative conjunction is used incorrectly because not only is followed by a verb, while but also is followed by a list of nouns. Its most plausibly refers to bats, but on that interpretation the singular pronoun does not agree with its plural antecedent, and the sentence indicates, somewhat implausibly, that the bats use echolocation to determine their own shape, size, and direction of movement. Alternatively, its could refer to some other thing that is not named in the sentence, but it is implausible and confusing to say that the bats determine the distance of that unnamed thing from an unspecified object.
E Introducing the second main clause they also can determine makes the sentence wordy and disrupts the correct construction to be used with the correlative conjunction: not only is followed by a noun, while but also is followed by a verb.
The correct answer is C.
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