PTE考生目前最大的问题之一就是练习题缺乏。除了有限的基本官方书（PLUS，Testbuilder, OG）之外，就没有题了。很多英语基础不是很扎实的同学很难找到练习材料。墨尔本文波雅思PTE培训学校专门为墨尔本，悉尼PTE考生准备了PTE练习的lecture 93篇。各位PTE同学可以练习阅读，练习记笔记技巧，可以练习复述，甚至可以练习describe image。废话少说，下面开始：
71. Scientists are always on the lookout for alternative sources of energy. Today we’re going to discuss one that’s so plentiful they say it could supply more energy than all the coal and oil in the world. It’s found in something called gas hydrate and, believe it or not, that’s a kind of ice. That’s right. But the water in this ice was way down below the Earth’s surface when it was frozen, so it was under a lot of pressure. And trapped inside the crystals of ice are individual molecules of methane—that’s what’s in natural gas. All this makes gas hydrate pretty strange stuff. If you touch a match to a piece of this ice, it’ll burst into flame. And when geologists bring a chunk of it up to the surface to study at normal air pressure and temperature, gas hydrate begins to hiss and bubble, and in less than half an hour, the ice melts and the methane inside escapes into the air. Now, as you might guess, this can make gas hydrate kind of hard for miners to handle. And then there’s the problem of where it’s located in frozen arctic regions or in ocean waters off the Atlantic coast, and up to a mile down. Environmentalists warn that mining it could even be disastrous. Offshore drilling could allow seawater to seep down into the huge icy deposits and release tons of methane up into the atmosphere. And methane, our listeners may recall, is a greenhouse gas that could really worsen the problem of global warming. So, gas hydrate may offer some interesting possibilities. But, with all these drawbacks, I’m not going to hold my breath waiting for it to fuel my furnace.
【生词摘录】
1. lookout: n. ［C］留神关注
2. hydrate: n. ［C］氢氧化物，水合物
3. crystal: n. ［C］水晶，晶体
4. methane: n.［C］甲烷，沼气
5. match: n. ［C］火柴
6. hiss: v. 发出尖锐的咝咝声
7. bubble: v. 起泡，冒泡
8. arctic: adj. 北极的
9. environmentalist: n. ［C］环境保护论者
10. disastrous: adj. 灾难性的
11. offshore: adj. 近海的
12. drilling: n. ［C］钻井
13. greenhouse: n. ［C］温室
14. drawback: n. ［C］缺点，障碍
15. furnace: n. ［C］炉子
文波讲词：
hydr水 hydropower
hydrate n.水合物
carbohydrate [kɑːbə’haɪdreɪt]n. 碳水化合物—protein carbon dioxide/ monoxide
leave carbon footprint
dehydrate[diːhaɪ’dreɪt; diː’haɪdreɪt]v. 脱水Her body had dehydrated dangerously with the heat.
hydrogen[‘haɪdrədʒ(ə)n]n. 氢
hydrant[‘haɪdr(ə)nt]n. 消防栓; 水龙头
arch: 首领 圆弧，首领 subscriber
archenemy[‘ɑːtʃ’enəmɪ] n. 主要敌人 archangel
anarchy[‘ænəkɪ] n. 无政府主义
monarch[‘mɒnək] n. 君主
matriarch[‘meɪtrɪɑːk] n. 女族长 matri-mother
patriarch[‘peɪtrɪɑːk] n. 男族长 patri-father
architect[‘ɑːkɪtekt] n. 建筑师
brick-layer detect/uncover
archangel[‘ɑːkeɪndʒ(ə)l] n. 天使长Satan
archive[‘ɑrkaɪv] n. 文档，档案馆 folder
fire——fur火———furious 发火的；furnace火炉
burn——furn烧————furnace 火炉
文波陪伴，英语不难
文波陪伴，PTE不难
文波英语培训学校，澳洲最负责，最有效的英语培训学校
