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At James Madison University in Harrisonburg, Virginia, the number of confirmed coronavirus cases among students and faculty is near 800, the most of any college in the state.

At a driving school of Goxueche in Chengdu, Sichuan province, students can learn about driving under bad weather conditions and emergency situations such as rear-end collisions and blow-outs through VR technology.

Asked how he would make Russian forces leave, Trump said: "We'll see. All options are open."

At popular tourist attractions, timely travel alerts should be issued and staff should work with other government departments to divert passenger flow and prevent a large gathering of people, he said.

At a meeting last week, the country's top officials said that China will step up efforts to push forward a new infrastructure campaign. The campaign covers seven fields including 5G, artificial intelligence and charging poles.