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
One advantage with Nostrils high on the head is to ______.
A．use sense of smell more efficiently
B．help them move fast and alert
C．enable them to find more food
D．help them live under water more easily
单项选择题
The word passage (Line 2, Para. 8) means ______.
A．gate
B．channel
C．cross
D．paragraph
相关试题