单项选择题

Which one is NOT mentioned in this passage that can be the source of carbon dioxide

A．Oil.
B．Trees.
C．Wood.
D．Soil.
<上一题 目录 下一题>
热门 试题

单项选择题
The word issue in the last paragraph can be replaced as ______.
A．organ
B．topic
C．publication
D．result
单项选择题
The committee report of National Academy of Sciences in Washington reveal that ______.
A．ice from Antarctica and Greenland is appropriate to show the change
B．carbon dioxide is released mainly from the fuel
C．level of carbon dioxide increases with global temperatures
D．carbon dioxide is helpful for tree growth
相关试题