A:Felt; washe
B:Feeling; washe
C:Felt; is washed
D:Feeling; is washed
一Oh,I only have one neighbor.He's Mr Smith.
The fastest people can run 100 ______ in 9.78 seconds.
下列各句中,没有语病的一句是( )
生态系统内即使某个物种由于某种原因而死亡,也会很快有其他物种占据它原来的生态位置,从而避免了系统结构或功能的失衡。这体现了生态工程的什么原理( )