Questions 14-17 The text has 9paragraphs (A-I). Which paragraph does each of the following headings best fit? *

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问题 Questions 14-17
The text has 9paragraphs (A-I).
Which paragraph does each of the following headings best fit?

*

选项 A、make fuel from carbon dioxide.
B、produce hydrogen.
C、discover more species of microbe.

答案A

解析

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