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听力原文：Wofsy says that politicians and scientists use different definitions of uncertainty. For example, a scientist might disprove one of several competing theories or even learn something entirely unexpected -- but still not be any closer to solving a problem.
Scientists know more about competing theories of uncertainty, so they are closer to solving a problem.
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What will be on the next program？
听力原文：Governments from Singapore to South Korea are increasingly lifting restrictions on gambling. But gamblers do not have to wait for new casinos to open to place their bets: They can just use their mobile phones. Telecommunications analysts predict that Asia will catch up soon. British Informa, a telecom and media consulting company, forecasts that close to 100 million people in the Asia-Pacific region will use mobile phones to place bets in 2010, half of the users globally. The mobile gambling market in Asia is still limited by the lack of suitable phones. Another obstacle for gaming operators is the unclear legal situation in many places.
What is one of the main reasons that restrict the mobile gambling market in Asia？
What sensory system don't we humans share with snakes at all？
听力原文：America's Central Bank is part of a larger financial system called the United States Federal Reserve System. It is not a single bank, but a banking system with operations that are both public and private. Its purpose is to control the flow of money in the economy, to supervise banking activity and to protect the financial system.
Which of the following is NOT the purpose of America's central bank？
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