【正确答案】 With a good momentum at present, oil and gas cooperation between China and Russia may encounter a variety of difficulties and sometimes more challenges than opportunities in the future. Both China and Russia are now aware that the Sino-Russian oil and gas cooperation is the trend of the times, which obtains great strategic significance for both parties to plan their economic development in the post-crisis era. Especially for China, in the context of economic globalization, fierce competition for energy resources in the international market and increasing energy demand at home, China will be in the position of the buyer in a long time, therefore more attention to the Sino-Russian oil and gas cooperation should be paid. Our oil and gas cooperation with Russia should not be taken as an expedient measure. On one hand, we must see the negative factors with a sober mind; on the other hand, we have to find favorable conditions and potential to promote the cooperation in a positive and pragmatic manner by means of great wisdom with an eye to long-term development strategy.