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Biden, 77, also won handily in Idaho, Mississippi and Missouri.
Besides, advanced mobile internet services, including 5G networks, and high-speed trains, make it convenient for doctors to travel and work in different regions, Zhang said.
Between 2012 and 2016, researchers in Beijing increased their contribution to papers in the Nature Index by 43 percent, and Shanghai's contribution increased by 22 percent. These trends supported a national growth of 45 percent for the same period, says the article.
Besides ensuring the safety of water supply for people in urban and rural areas, Yunnan's water conservancy department is also working to guarantee water supply for industrial and agricultural production.
Biden, who served as US vice president from 2009 to 2013, is the front-runner for the Democratic presidential nomination. Trump is seeking a second four-year term in the November 2020 election.
来源：资阳报