问题详情

A．Scientists have managed to persuade industries to take measures to reduce emissions of gases into the atmosphere.
B．There is no general agreement on the causes and effects of acid rain yet.
C．Special glasshouses are set up in order to investigate the effects of air pollution on plants.
D．Ozone is mainly emitted by the oil refining industry,请帮忙给出正确答案和分析，谢谢！