Which of the following is right?

B. Listen to the following short statements and then choose one of the answers that best fits the meaning of each statement by blackening the corresponding letter on the ANSWER SHEET. There are 10 questions in this part of the test, 1 point for each question. You will hear each statement only once.
   11. It’s been ten years since the global financial crisis broke out and the first G20 Summit was convened.
   12. Today, the global economy, while maintaining growth on the whole, is still not free from the underlying impacts of the crisis.
   13. The new round of technological revolution and industrial transformation are triggering profound changes, the wealth gap keeps widening, and social contradictions are growing.
   14. Chinese young people have also helped us rebuild a factory that was built in the former Soviet Union four decades ago.
   15. I started to understand China many years ago. I am familiar with Chinese leaders and have been paying attention to the changes that have taken place in this country. This change is more profound than anyone else.
   16. China’s reform and opening up is very unique because China is not an ordinary country, but a big country with a population of 1. 4 billion.
   17. In mankind’s relentless quest for development and progress, the trend toward openness and integration among countries is unstoppable despite ups and downs in the global economy.
   18. Going forward, win-win cooperation is the only choice for us, be it in good times or bad.
   19. What the climate needs to avoid collapse is a contraction in humanity’s use of resources.
   20. The Unified State Exam (USE) is a series of exams in Russia, which are obligatory for any school student to let them enter a university or a professional college.