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"China has huge potential in the area since the bioethanol consumption only takes up 2 percent of the total mix in the transportation sector while the figure in the US is 10 and in Brazil it's 30," said Nielsen.

"CDC guidelines are still recommended but not required, and the president is the most tested man in America," she said. "It's his decision whether to wear a mask."

"CDC China had a very consistent message and told people exactly what they need to do. Sometimes when people didn't wear a mask, there was enforcement," he said. "We know in the United States when you recommend something and you don't enforce it, sometimes it doesn't work."

"Campus safety concerns the healthy development of millions of students and the happiness of their families. Schools must be solidly built, like those in areas of post-earthquake reconstruction, and they should also be the most secure places when it comes to safety," Li told the meeting.

"China is shifting toward a floating exchange rate regime, and we allow the exchange rate of the yuan to be determined by market demand and supply," Yu said.