今天来跟同学们聊聊雅思听力考试中，在section4 高频出现的话题——自然资源。该话题不仅与环境场景挂钩，还与科技场景有关。因频繁出现生词难词，涉及内容与生活没有非常密切的关系，导致涉及该话题的听力题目难度偏高。下面请听一段课外录音，学习一下两段与自然资源相关的听力素材。
原文如下：
Hydroelectric Energy
Hydroelectric energy is made by flowing water. Most hydroelectric power plants are located on dams, which block the river and create an artificial lake. A controlled amount of water is forced through tunnels in the dam to produce electricity.
Hydroelectric energy has some advantages. First, it is fairly inexpensive to produce. Dams don’t need to be complex, and the resources to build them are not difficult to obtain. Second, its source is available to many people as rivers flow all over the world. Third, it’s fairly reliable for the flow doesn’t depend on the weather but the control by engineers.
场景词汇
hydroelectric 水力发电的
artificial 人工的
complex 复杂的
obtain 获得
block 堵塞
tunnel 隧道
resource 资源
reliable 可靠的
原文如下：

Sustainable Fishing
Seafood is respected all over the world as an important source of protein and healthy fats. In order to continue relying on the ocean as an important food source, we need to employ sustainable fishing practices.Some of these sustainable fishing practices are still used today.
For example, people in Hawaii practice spear fishing. Modern spear fishing is practiced all over the world. Another way to prevent overfishing is to simply refrain from eating fishing and other seafood. According to marine scientists, people need to take a break from eating seafood until we learn better how to maintain healthy fish and wildlife populations.
场景词汇
sustainable 可持续的
动词：sustain；注意s后的清辅音被重读时不送气（所谓的“浊化”）
protein 蛋白质
构成蛋白质的物质：amino acid
overfishing 过度捕捞 seafood 海鲜 wildlife 野生动物
注意单词拼写问题，不要随便空格，或者加连字符
marine 海洋的
submarine 潜水艇
maintain 维持
名词：maintenance；注意与动词的拼写区别、重音区别
spear 叉；茅
文中为名词，但此词也有动词词性
refrain 戒除
take a break from 从。。。中暂停
注意一词多义听力考试中出现过相同的意思：coffee break
除了 语料积累，也希望大家注意 同词根单词之间的发音区别，避免“想当然”读错。 毕竟发音不准会导致听不出录音内容。 所以平常练习听力时，可以采取跟读的模式来改善发音哦~听力剧场持续更新ing