In this questions below contains a paragraph followed by alternative summaries. Choose the option that best captures the essence of the paragraph.
Thousands of officials from all over the world met for two weeks of difficult talks in Bonn under the United Nations’ climate convention. But they were conscious that even more difficult and probably more important negotiations were under way in Beijing. America’s most senior climate-change officials were meeting their Chinese counterparts. The two countries are by far the world’s biggest emitters of greenhouse gases. They will determine whether a worthwhile global treaty to limit emissions can be concluded as planned in Copenhagen in December. The treaty is to replace the Kyoto protocol, which expires in 2012. Some 180 countries will take part in the negotiations, but many feel that, on this issue more than any other, China and America make up a “G2” that determines the global post-Kyoto agenda.
1. The United Nations’ climate convention may not be able to determine the global post-Kyoto agenda on green house gases unless China and America jointly ratifies it.
2. In 2012, China and America, the two biggest emitters of green house gases have the potential to determine the global post-Kyoto agenda to limit emissions.
3. At the next United Nations’ climate convention, China and America, the two biggest emitters of green house gases, will determine the global post-Kyoto agenda to limit emissions.
4. At the next United Nations’ climate convention, China and America, the two biggest emitters of green house gases, will determine the global post-Kyoto agenda to limit emissions, overriding 180 other nations.