第四十五讲 环境问题与环境管理近几十年来，随着人口增长、经济发展，环境问题日益突出，严重威胁人体健康和社会经济的发展。对当前人类面...
第四十四讲 自然灾害的损失与预防1．自然灾害损失的时间差异随着时间的逐渐推移，全球重大自然灾害造成的经济损失呈上升趋势。一方面，由...
第四十三讲 我国主要的自然灾害1．我国的干旱灾害分区旱灾类型旱灾成因降水因素水资源因素社会经济因素东北华北春旱为主春季气温回升快，...
第四十七讲 环境污染的防治及环境治理1．水污染形成与危害形成水体污染物――→水体――→水体化学、物理、生物等特征改变―→水质恶化危...
第四十六讲 自然资源保护和生态环境保护1．水资源问题水资源短缺是我国的基本国情，其实质是水资源供与需的平衡问题。产生原因对策自然原...
第四十讲 旅游、旅游资源及旅游景观欣赏1．旅游资源的特性旅游资源的内涵及特性如下图所示：2．我国旅游资源的主要类型类型种类举列核心形...
第四十二讲 自然灾害概述类型成因主要分布地区气象灾害干旱长时期无降水或降水异常偏少造成空气干燥、土壤缺水全球的干旱和半干旱地区以及...
Passage 40 A Passion Within You Everyone—every person in this world has a dream: a passion, a vision in their...
Passage 39 Keep Your DirectionWhat would you do if you failed? Many people may choose to give up. However, the...
Passage 38 The Goodness of LifeThough there is much to be concerned about, there is far, far more for which to...
Passage 37 The Most Beautiful HeartOne day a young man was standing in the middle of the town proclaiming that...
Passage 36 You Have Only One Life There are moments in life when you miss someone so much that you just want...
Passage 35 Develop Your Own Helping RitualsIf you want your life to stand for peace and kindness, it’s helpful...
Passage 34 Never give up hopeLife doesn’t always give us the joys we want. We don’t always get our hopes or...
Passage 32 IF You Have Your Life to Live Over AgainWhen the late Nadine Stair of Louisville, Kentucky, was 85 ...
Passage 31 Please Dress Me in RedI have worked with numerous children infected with the virus ( 病毒 )that caus...
Passage 30 Keep Your Goals in SightWhen she looked ahead, Florence Chadwick saw nothing but a solid wall of fog...
Passage 29 The Happy DoorHappiness is like a pebble dropped into a pool to set in motion an ever-widening circl...
Passage 28 An Invisible SmileMr. Dawson was an old grouch, and everyone in town knew it. Kids knew not to go ...
Passage 27 Paint a Masterpiece for YourselfConsider… YOU！In all time before now and in all time to come, there...
