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As a loving mother of a toddler, Covington always tries her best to cheer her students up in class. Recently, she has been doubling down on that effort since the outbreak of the novel coronavirus in China, about which she said her online students, mostly kindergartners and primary school kids, felt really frustrated.

As a highly open and vibrant region in China, the bay area accounts for less than 5 percent of the country's total population but contributes around 12 percent of the national GDP.

As a manufacturing giant, China has great potential in cooperating with the EU members in machinery production, environmental protection and robotics, he said.

As a result, almost all of the households borrow money from other people if they cannot find workers and suppliers who are willing provide labor and materials on credit.

As he was departing the White House for Arizona, Trump said he would allow Fauci to testify before the Republican-led Senate, but not the Democrat-led House of Representatives, calling the lower chamber a "setup".