节约能源
another round of energy crisis is knocking at the door. in 2004, world oil consumption reached a new record, causing oil price in the international market to skyrocket amazingly.
as for china, it was reported that many traditional mineral cities in northeastern china had run into predicament, with their economy collapsed and workers unemployed, only because coal had been mined out.
fossil energy resources, including coal, oil and gas, are unlike sunlight, water power and wind power which are generated consistently. theyre not practically reproductive during human history. once consumed, theyre gone forever.
if they were to be exhausted before we could find sufficient reproductive resources to replace them with, wed have to live in entire blackout again like our ancestors have done thousands of years ago. thats of course not what anyone would want to see.
due to technical limitations, people still have to utilize these resources now.
as a result, we must economize them most cleverly. new techniques should be developed and applied to reduce energy cost in industry and daily life. alternative energy should be employed wherever possible. eradicate any practice that wastes energy.
humans have overcome so many crises in history, and were sure to win this time also.
雅思听力租房场景词汇整理及解析
雅思听力考试的出题点陷阱分析
雅思听力同音词总结
雅思听力成绩提高的4个基础步骤
拿下雅思听力高分的5个步骤
怎样养成良好的雅思听力习惯?
雅思听力选课场景总结
雅思听力考试时间的分配技巧
雅思听力成绩提高需要解决的两个问题
雅思听力高分必备技巧:读题技巧
雅思听力考场上的4个技巧
雅思听力考试的三大高分策略
雅思听力考试中的语音提升技巧
雅思听力成绩提高的公式解读
雅思听力评分标准的特点分析
雅思听力考试的精听泛听技巧讲解
详解雅思听力中的衔接手段
雅思听力考试的特点分析
雅思听力考试的6种信号词
雅思听力练习方法分享
雅思听力电话场景的7个应对策略
雅思听力练习材料不能混用
雅思听力难点解析:大额数字
雅思听力不可忽视的细节:答案拼写
基础薄弱的考生应该怎么备考雅思听力
雅思听力题型分类解析
雅思听力备考 如何灵活运用剑桥雅思
雅思听力素材:美丽中国(BBC纪录片)
雅思听力材料:英国史(A History of Britain)
雅思听力的备考重点及注意事项
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