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题库 / Prep2007E1-SC-76
By recording the noise of crinkled wrappers as they were slowly stretched out in an otherwise silent chamber, and then digitizing and analyzing the sound emissions on computers, a team of scientists found the noise not continuous but consisted of individual bursts or pops just thousandths of a second long.
digitizing and analyzing the sound emissions on computers, a team of scientists found the noise not
digitizing and analyzing the sound emissions on computers, a team of scientists found that the noise was not
digitizing and analyzing the sound emissions on computers, a team of scientists found the noise not to be
the sound emissions were digitized and analyzed on computers, a team of scientists found that the noise was not
the sound emissions were digitized and analyzed on computers, a team of scientists found the noise not to be
and前后并列，not..but也需要保持并列
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