2. 外语
  3. What was scientists’ understanding of methane? To test whether plants are a source of methane, the scientists created

What was scientists’ understanding of methane? To test whether plants are a source of methane, the scientists created

admin2009-06-15  37
问题 What was scientists’ understanding of methane?
To test whether plants are a source of methane, the scientists created
选项 A、a oxygen-free environment.
B、an environment with the same concentration of oxygen as the Earth has.
C、a carbon dioxide-free environment.
D、an environment filled with the greenhouse gas.
答案B
解析 第三段第一句说，科学家使用密封的房间来做实验，房间里氧气的浓度与地球大气中的氧气浓度相仿。所以B句符合原文的意思，其他三个选择则不符合原文内容。
转载请注明原文地址:https://kaotiyun.com/show/dWhd777K
本试题收录于： 职称英语理工类基础题库职称英语分类
0

职称英语理工类基础

职称英语

相关试题推荐
随机试题
最新回复(0)