2013年职称英语理工类c级阅读理解练习3_第2页

　　The new finding is an “interesting observation,” says Jennifer Y.King，a biogeochemist at the University of Minnesota in St.Paul3.Because some types of soil microbes consume methane，they may prevent plant-produced methane from reaching the atmosphere.Field tests will be needed to assess the plant’s influence，she notes.
　　词汇:

　　methane/5meWein/n.甲烷，沼气 emission/i5miFEn/n.散发，发射
　　geochemist n.地球化学家 triple/5tripl/v.增加三倍;adj.三倍的
　　Celsius n.&.adj.摄氏(的) bacteria/bAk5tiEriE/n.(bacterium 的复数)细菌
　　microbe/5maIkrEJb/n.微生物 nanogram n.微克
　　biogeochemist n.生物地球化学家 chamber/5tFeimbE(r)/n.室，房间;腔
　　注释：
　　1. the Max Planck Institute for Nuclear Physics in Heidelberg，Germany：马克思·普朗克核物理研究所，位于德国海德堡。海德堡系德国西南部城市，在巴登一符腾堡州的内卡河畔。海德堡大学是德国历史最悠久的大学。
　　2. microbe：细菌，意义同bacterium(bacteria的单数形式)。但microbe不用作专门术语。
　　3. St.Paul：圣保罗，美国明尼苏达州首府。
　　练习：

　　1. What was scientists understanding of methane?
　　A h was produced from plants.
　　B It was not a greenhouse gas.
　　C It was produced in oxygen-free environments.
　　D It traps more heat than any other greenhouse gas.
　　2. To test whether plants are a sot，roe of methane，the scientists created
　　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.
　　3. Which statement is true of the methane emissions of plants in the experiment?
　　A The lower the temperature，the higher the amount of methane emissions.
　　B I.iving plants release less methane than dried plants at the same temperature.
　　C When exposed to sunlight，plants stop releasing methane.
　　D The higher the temperature，the greater the amount of methane emissions.
　　4. Which of the following about methane is Not mentioned in the passage?
　　A Plants growing in soil release methane.