2. 外语
  3. Which of the following best describes the relationship of the first paragraph to the passage as a whole? According the passage,

Which of the following best describes the relationship of the first paragraph to the passage as a whole? According the passage,

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问题 Which of the following best describes the relationship of the first paragraph to the passage as a whole?
According the passage, one of the ways in which analog recording systems differ from digital recording systems is that analog systems______
选项 A、can be used to reduce background noise in old recordings
B、record the original sound as a continuous waveform
C、distort the original sound somewhat
D、can avoid introducing extraneous and nonmusical sounds
E、can reconstruct the original waveform with little loss inquality
答案B
解析 This question asks you to identify something mentioned specifically in the passage that is a feature of analog recording systems that is not shared by digital recording systems. Choice B is the best answer. The passage states in lines 10-13 that analog recording systems represent the original sound as a continuous waveform, while in lines 21-23 it notes that digital recordings reduce the original sound to a series of discrete numbers. Neither A, D, or E are features of analog systems, according to the passage. Choice C is not correct: while the passage does say that analog recording systems distort the original sound, the passage also notes that “it is impossible for digital systems to avoid some distortion” (lines 31-32). Thus some amount of sound distortion is involved in both analog and digital recording processes.
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