What’ s the range of yuan fluctuation within a trading day?

In this section， you will hear five short news items.
Each item will be read only once.
After each item， there will be a fifteen-second pause.
During the pause， read the question and the four choices marked A， B， C and D，and decide which is the best answer.
Then mark the corresponding letter on the answer sheet with a single line through the center.
16. The central parity rate of the renminbi, or the yuan, strengthened by 115 basis points to 6. 8402 against the US dollar on Tuesday, according to the China Foreign Exchange Trade System. In China’s spot foreign exchange market, the yuan is allowed to rise or fall by 2 percent from the central parity rate each trading day.
17. The price of regular gasoline dropped across the United States last week, according to a report released by US Energy Information Administration on Monday. For the week ending January 7, the US average regular gasoline retail price dropped nearly 3 cents from last week to $2. 24 per gallon, which was 29 cents per gallon lower than the same period last year.
18. When internet enterprises emerged in China, the laws and regulations on personal information protection were not complete yet, so there were still loopholes for them to make use of. However, the Cyber-security Law came into effect in June 2017, and the personal information regulation in 2018, yet the products of internet companies continue neglecting people’s need for privacy and continue acquiring personal information without approval.
19. The profound friendship between China and Africa remains unbreakable despite some countries’ attempts to discredit China’s cooperation with the continent, State Councilor and Foreign Minister Wang Yi said in reference to his New Year’s tour of Africa. Wang wrapped up his trips on Sunday to four nations—Ethiopia, Burkina Faso, Gambia and Senegal. The visits further boosted China’s economic, security and Belt and Road cooperation with African countries.
20. The government will likely set a more flexible GDP growth target for 2019, but it would be around 6.3 percent, which can strike a relatively good balance between stabilizing economic growth and forestalling economic and financial risks. And if a GDP growth above 6.3 percent is maintained— which will raise nominal GDP to $14.93 trillion and per capita GDP to $10, 600— China will have a better chance of doubling its GDP and per capita income by 2020 from the 2010 level, which are vital to building a moderately well-off society by 2020.