2. 外语
  3. According to the passage, scientists used to think that the X-rays were produced by ______. What does the word "generating" mea

According to the passage, scientists used to think that the X-rays were produced by ______. What does the word "generating" mea

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问题 According to the passage, scientists used to think that the X-rays were produced by ______.
What does the word "generating" mean in paragraph five?
选项 A、It means "creating".
B、It means "producing".
C、It means "inventing".
D、It means "doing".
答案B
解析 本题考查词义理解。据单词"generating"所在的语境能推断出在句中应为"制造，产生"的意思。
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