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Being selected to become a flight attendant also gave Wu the chance to witness the rapid development of civil aviation.

Biden, who turns 78 on Nov 20, would be the oldest person to become president if elected. Biden's age also has led to broad speculation he may serve only one term, making Harris a potential top contender for the nomination in 2024. Some of his allies were concerned that would make her a bad fit for the No 2 job and questioned her loyalty, reported Reuters.

Biden, Harris kick off 2020 campaign - World - Chinadaily.com.cn

Bernard said there’s also a flywheel effect underway with the accelerator, the Alexa Fund, and the Alexa Fellowship, which supports university researchers and students. Case in point: YourIKA, a Canadian startup building “intelligent learning as a service” tech, initially got off the ground with the help of an Alexa Fellowship offered to one of its co-founders at the University of Waterloo. And now YourIKA is participating in the accelerator.

Bezos said that testing everyone regularly for COVID-19 — not just his own employees — will be key to helping the world bounce back from the novel coronavirus crisis.