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Renewables account for only a small share of global primary energy consumption, which is still dominated by fossil fuels—30% each for coal and oil, 25% for natural gas.
出自-2017年6月阅读原文
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Fossil fuels remain the major source of primary energy consumption in today's world.
出自-2017年6月阅读原文
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For example, the United Arab Emirates has endorsed an ambitious target to draw 24% of its primary energy consumption from renewable sources by 2021.
出自-2017年6月阅读原文
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Virtually all experts agree that the fee-for-service system—doctors are rewarded for the quantity of care rather than its quality of effectiveness—is a primary reason that the cost of care is so high.
出自-2016年6月阅读原文
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Irrigation is the primary agricultural use of human waste in the developing world.
出自-2016年6月阅读原文
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Its primary mission is to enhance human well-being and help meet the basic needs of all people, with the particular focus on those who are vulnerable, oppressed and living in poverty.
出自-2016年12月听力原文
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As American research universities begin to resemble profit centers and entertainment complexes, it's easy to lose sight of their primary mission; to produce and spread knowledge.
出自-2014年6月阅读原文
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First, they have questioned whether the primary responsibility for digitally archiving the world's books should be allowed to fall to a commercial company.
出自-2011年12月阅读原文
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And, if you’re not sure, in is always a good idea to check with your primary care provider.
2019年12月六级真题(第二套)阅读 Section B
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For almost all white-collar jobs, email is the primary tool of corporate communication.
2017年12月六级真题(第一套)阅读 Section B
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So they get involved by looking at advertising and really critically assessing the consumer behaviour aspects of it and getting involved sometimes doing primary research.
2017年6月六级真题(第二套)听力 Section C
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virtually all experts agree that the fee-for-service system— doctors are rewarded for the quantity of care rather than its quality of effectiveness — is a primary reason that the cost of care is so high.
2016年6月六级真题(第二套)阅读 Section B