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本聽力材料來自于老托partb，partc，是公認實施有效的聽寫材料，對于上手托福時間不長的同學非常適合。我曾經一次短時間備考聽力提高了7分也歸功老托。希望大家和我一樣一定要堅持下來噢。相信堅持學習的同學聽力上都會有很大的飛躍！
Nopain, no gain.我們的安排是這樣的，第一遍用聽力軟件精聽材料（建議做單句聽寫，聽寫的時候不要偷看我給的挖空題），然后按照我給的挖空題填關鍵詞，回復后即可看到聽力原文和文章精解，我將把難點和易錯點oneby one 分析給大家。
回復填空答案格式如下：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.
