2. 外语
  3. What does the passage mainly discuss? Which of the following questions did the theory of spontaneous generation attempt to answ

What does the passage mainly discuss? Which of the following questions did the theory of spontaneous generation attempt to answ

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问题 What does the passage mainly discuss?
Which of the following questions did the theory of spontaneous generation attempt to answer?
选项 A、What is the origin of the living organisms are seen on some food?
B、How many types of organisms can be found on food?
C、What is the most effective way to prepare living organisms for microscopic examination?
D、How long can food stand before it putrefies?
答案A
解析
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