Choose the most appropr i ate sentence to fill in the blank. 选择合适的句子放到段尾。 To protect the environment, governments of many countries have done a lot. Legislative steps have been i ntroduced to control air pollution, to protect the forest and sea resources and to stop any environmental pollution. The local authorities usually spend time and money educating citizens to be aware of the threat of plastic bag pollution. Governments also support and encourage manufacturing of water-saving or electricity-save gadgets. From all the measures adopted, it can be seen that ___________________________________.