______是指消费者层次上的能量贮存速率，通常指净生产量。 ( )
A．初级总生产力
B．初级净生产力
C．群落净生产力
D．次级生产力
参考答案：C
Shenzhou VIII spaceship and Tiangong-1 space lab____ into the space in 2011.
A. sent B. were sending C. were sent
鲜或干的当归
