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American Airlines said Sunday it is extending those cancellations through Sept 3. Boeing has yet to complete a certification test flight and formally submit its software upgrade and training changes to the Federal Aviation Administration (FAA) for approval.

Among the other products sold through livestreaming were Chinese lobsters from Xinliangji, vouchers from milk tea maker Nayuki as well as a gel pen from Xiaomi Corp. Nayuki said it sold 100,000 milk tea products and vouchers and achieved sales revenue of 9 million yuan via livestreaming platforms.

Among the 1,250 schools ranked, 17.7 percent are located in the United States, a slight decrease from 21 percent in 2017. The next most well-represented country on the list is China, where 136 universities made the list.

Amazon’s relationship with Microsoft, despite competing in some areas, stands in contrast to its standing with other tech giants. Amazon is in the midst of a dispute with Google that has seen the search giant remove YouTube from Amazon Fire TV and Fire TV Stick devices. Amazon has in recent months began thawing an icy relationship with Apple, restoring Apple TV devices to its online store, two years after removing them. And Amazon Prime Video recently popped up on Apple TV.

Amir Gul, aged about 15, said he and his Papen classmates are constantly anxious.