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Magoosh - 语法SC - 145
When chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, containing equal numbers of molecules, and many scientists, doubting that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro's number" by use of several different experimental designs.
  • AWhen chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, containing equal numbers of molecules, and many scientists, doubting that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro's number" by use of 分析该选项
  • BThe chemist Amedeo Avogadro (1776 – 1856), positing that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, and many scientists doubted that, even if this theory were true, the number could not be ever measured, while in the early 20th century, Perrin measured the value of "Avogadro's number" using 分析该选项
  • CThe chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, but many scientists doubted that, even if this theory is true, the number could never be measured, but in the early 20th century, Perrin has measured the value of "Avogadro's number" by use of 分析该选项
  • DThe chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, and many scientists doubted that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro's number" using 分析该选项
  • EThe chemist Amedeo Avogadro (1776 – 1856), posited that equal volumes of different gases, at the same temperature and pressure, would contain equal numbers of molecules, although many scientists doubted that, even if this theory were true, the number could be ever measured, then in the early 20th century, Perrin, measuring the value of "Avogadro's number" by use of 分析该选项
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正确答案: D

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