单项选择题


A．contribution
B．deduction
C．contemplation
D．speculation
<上一题 目录 下一题>
热门 试题

单项选择题
Those studies carried out in North Carolina suggest that _________.
A．trees' function for absorbing carbon dioxide is limited
B．carbon dioxide is the main cause for global warming
C．leaves falling from trees can emit more oxygen
D．more carbon dioxide is beneficial for trees' growth for many decades
单项选择题
The word issue in the last paragraph can be replaced as _________.
A．organ
B．topic
C．publication
D．result
相关试题