A、The preservation of coastal resorts. B、The closure of political disputes. C、The gap between the rich and the poor. D、The commi

　　The latest round of United Nations climate change talks begins Monday in the coastal resort city of Cancun, Mexico. Representatives from 194 countries are scheduled to attend. (5) Negotiators will try to close the political gap between commitments to reduce carbon emissions made by developed and developing nations.
　　Last year’s talks in Copenhagen, Denmark, carried high hopes for a binding global agreement to curb carbon emissions, (6) but in the end delivered a disappointing and loose set of voluntary actions named the "Copenhagen Accord. " (7) Eighty countries responsible for 80 percent of the world’s carbon emissions signed the accord, agreeing— among other things—that the global temperature rise should be limited to two degrees Celsius above pre-industrial levels.
　　5. What is the latest round of UN climate change talks focused on?
　　6. How was the result of last year’s talks in Copenhagen?
　　7. How many countries signed the “Copenhagen Accord”?