水深(m)
1
2
3
4
白瓶中O2浓度(g/m2)
+3
+1.5
0
﹣1
黑瓶中O2浓度(g/m2)
﹣1.5
注:“+”表示增加;“﹣”表示减少.
A:在水深1m处白瓶中水生植物产生的氧气为3g/m3
B:在水深2m处白瓶中水生植物光合速率等于所有生物的呼吸速率
C:在水深3m处白瓶中水生植物不进行光合作用
D:在水深4m处白瓶中水生植物产生ATP的场所是叶绿体、细胞溶胶和线粒体
“秦王扫六合,虎视何雄哉!挥剑决浮云,诸侯尽西来。”这首李白诗句描写的是( )
环保是我国的一项基本国策,空气的净化日益受到人们的关注,下列气体组中的各种气体都属于空气污染物的是( )
This is my day
I am a doctor. I work at night. I go to work at 6:30 p. m. I eat dinner at 9:30. I usually go home at 8:00 in the morning. After breakfast, I go to bed at 9:10 a. m. I usually get up at 2:30 in the afternoon. I eat lunch at 3:00 in the afternoon. Then I play sports at 4:00 in the afternoon.
This is my day. I enjoy my life.