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本听力材料来自于老托partb，partc，是公认实施有效的听写材料，对于上手托福时间不长的同学非常适合。我曾经一次短时间备考听力提高了7分也归功老托。希望大家和我一样一定要坚持下来噢。相信坚持学习的同学听力上都会有很大的飞跃！
Nopain, no gain.我们的安排是这样的，第一遍用听力软件精听材料（建议做单句听写，听写的时候不要偷看我给的挖空题），然后按照我给的挖空题填关键词，回复后即可看到听力原文和文章精解，我将把难点和易错点oneby one 分析给大家。
回复填空答案格式如下：1____2____3____...et.al.
Today I want to talk about the Earth's last major____________shift, at the end of thelast ____________. But first, let's backup a moment and review what we know about climatic change in general. First, wedefined "climate" as____________patterns ofweather over significant periods of time. In general, changes in climate occurwhen the energy balance of the Earth is____________. Solar energy enters the Earth's atmosphere aslight and is____________by the Earth'ssurface as heat. Land, water, and ice each affect this energy exchangedifferently. The system is so complex that, to date, our best computer modelsare only and are notsophisticated enough to test ____________about the causes ofclimatic change. Of course, that doesn't keep us from____________. For instance, volcanic activity is one mechanismthat might affect climatic change. When large volcanoes erupt, they tons of particlesinto the upper atmosphere, where the particles then reflect light. Since lesslight is entering the system of energy exchange, the result would be a____________of the Earth's surface.Of course, this is just one possible mechanism of global climate change. In allprobability, a complete explanation would involve several different mechanismsoperating at the same time.
