根据问题填空:
例:If I were in your position,I would pay close attention.
→Were I in your position,I would pay close attention.
下列各项中,属于生态系统分解者的是( )
化学实验中常常出现“1+1=2”或“1+1≠2”的有趣现象。下列符合“1+1= 2”的事实是( )
摆绳长度(厘米)
10
20
30
40
50
60
平均摆动次数(次)
90
63
51
44
37
数据分析: