下图是某地区广东松的种群年龄结构调查结果，该种群的最终发展趋势是
A．总能量增加
B．种群密度下降
C．环境阻力不变
D．该种群总能量降低
BD
无比山药丸主治（）
A.阴虚肺热咳血
B.胃热壅盛吐血
C.阴虚火旺尿血
D.肝火犯肺咳血
E.肾虚不固尿血
—How are you today, Bill?
—I'm feeling even _____ today. I don't think the medicine (药) works.[ ]
A. better
B. worse
C. happier
D. unluckier
