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Who would have thought that, globally, the IT industry produces about the same volumes of greenhouse gases as the world’s airlines do-rough 2 percent of all CO2 emissions?
Many everyday tasks take a surprising toll on the environment. A Google search can leak between 0.2 and 7.0 grams of CO2 depending on how many attempts are needed to get the “right” answer. To deliver results to its users quickly, then, Google has to maintain vast data centers round the world, packed with powerful computers. While producing large quantities of CO2, these computers emit a great deal of heat, so the centers need to be well air-conditioned, which uses even more energy.
However, Google and other big tech providers monitor their efficiency closely and make improvements. Monitoring is the first step on the road to reduction, but there is much to be done, and not just by big companies.
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试题解析
从全球范围来看，有谁会想到IT行业释放的温室气体与全球航空公司产生的一样多呢？它大约占总二氧化碳总排量的2%。
许多日常工作对环境造成了令人震惊的破坏。根据每次你搜索并得到正确答案的尝试次数，谷歌会排放0.2至7克的二氧化碳。为了把搜索结果迅速传递给用户，谷歌不得不在全世界范围内建立大型数据中心，并配备大功率计算机。这些电脑在排放大量二氧化碳的同时，也产生大量的能量。因此，这些数据中心需要良好的空调降温，这又会同时产生大量的能量。
不过，谷歌和其他技术提供商严密检测他们的效果并不断进行改进。监控是减排的第一步，但这仍任重道远，且不仅只由谷歌这样的大公司来承担。