Untangling America's complex production subsidies will require congressional approval, against likely opposition from the oil lobby. And questions remain: under the cap-and-trade legislation under discussion in Congress, will emissions allocations given to fuel refiners count as a subsidy? All countries are expected to come to the next G20 meeting, in Canada in 2010, with a plan of action. The declaration may yet be whittled away to nothing.
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What's more, for all the rapid growth, significant questions and challenges remain.
更重要的是，尽管增长快速，但重大问题和挑战仍然存在。
What it will be called in future, and what it will do, remain fascinating questions.
未来我们会把它叫做什么，会用它来干什么，依然是让人着迷的问题。
But the research on this treatment is still at an early stage, and many questions remain about its safety and effectiveness.
不过，针对这种疗法的研究还处于初级阶段，有关其安全性及疗效还存在许多问题。
The UN Office of the High Commissioner for Human Rights says too many questions related to the last stages of the war between the government and Tamil Tiger rebels remain unanswered.
VOA: standard.2009.10.25
Still,questions remain from his time as head of the Vatican's main office of doctrine and why Cardinal Ratzinger chose not to discipline or defrock the American priest, the Reverend Lawrence Murphy.
VOA: standard.2010.04.01
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