What is the passage mainly about? Which of the following statements best explains why "the second of these was the more serious

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问题 What is the passage mainly about?
Which of the following statements best explains why "the second of these was the more serious impediment" (line 22)?

选项 A、Chemical knowledge was limited to a small number of people.
B、The symbolic language used was very imprecise.
C、Very few new discoveries were made by alchemists.
D、The records of the chemical processes were not based on experiments.

答案B

解析 在第三段,作者讲到了阻碍化学发展的最后一个问题:神秘因素,其中,作者讲了两个方面。之后说:其中的第二个因素是更为严重的阻碍,因为早期炼金术士们所发现的,经常是用象征性的语言记录下来的,这种语言仅为极少数人理解,甚至的是一些有意模糊的符号。这说明作者认为这一方面为化学发展的更为严重的阻碍是因为这种象征性的语言很不准确。
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