郑州激光眼睛多少钱一次(郑州弱视治疗的最佳时机) (今日更新中)

NEW YORK (AP) — The head of the U.S. communications regulator said T-Mobile's nationwide, hours-long outage Monday was "unacceptable" and that the Federal Communications Commission will investigate. The FCC has fined telecom companies in the past for network outages. RELATED: Major wireless carriers experiencing outages throughout U.S.T-Mobile, one of the country's three largest wireless service providers, said it had a "voice and text issue" that began around noon EDT Monday. T-Mobile's President of Technology Neville Ray tweeted that everything was restored."Voice and text services are now restored," T-Mobile Neville Ray tweeted. "Thank you for your patience as we fixed the issues. We sincerely apologize for any and all inconveniences." 756

NEW JERSEY — The teenage girl screamed and fought with the school security officer when he tried to check her bag."The police later told me she had dirty clothes in her bag because she was homeless and didn't want anyone to know," Akbar Cook, the principal of West Side High School in Newark, New Jersey, told CNN. "She was fighting for her pride."Cook said many students at West Side faced humiliation because they didn't have anything clean to wear.So when school starts Sept. 4, there will be a new facility in the building: a free laundromat. 554

New data shows that those who use Duolingo — a popular language app — can learn the equivalent of four semesters of university study. The app is free for all, and parents and teachers say it is a good supplement for students of all ages who are learning from home this fall.Averill, 10, is quite the Duolingo master. Her Spanish teacher recommended the app to pair with her in class lessons a few years back. Averill took that one step further.She's currently learning Korean. When she masters that, it will be her third language."My dad is Korean, and so my grandparents speak Korean," Averill said. "I'm trying to learn it because we're planning a trip to Korea to visit some relatives and I'm trying to learn it so I can speak to them a little bet,ter than I can right now."She likes to take what she's learned and practice on her grandparents. So far, she says, she's doing pretty well.Korean and Spanish are two of the 39 featured languages on Duolingo. This spring, when COVID-19 sent America into lockdown, new users flocked to the app. Dr. Cindy Blanco is a learning scientist at Duolingo."Our new users spiked 66%, which in any other time would be enormous but the spike continued the rest of the month," said Dr. Cindy Blanco, a learning scientist at Duolingo. "Our new user growth in March was 113%, which is unprecedented — kind of the word of the year."People were also downloading the app to keep their language skills sharp and because teachers needed help."The most important thing to not fall behind in a language course is to keep getting in front of that language," Blanco said.As a Doctor of Linguistics, Blanco is a Duolingo user herself. She's currently trying to keep up with her Russian. She's already well-versed in Spanish, French, Catalan, Italian and American Sign Language.Blanco says Duolingo offers all sorts of content, including lessons, short stories, podcasts, and seven a virtual language practicing event. Because Duolingo is app-based, it means users can access it from anywhere, anytime."It's more important than ever that we create products that can meet people where they are and where they are is at home with small handheld devices," Blanco said. "So, how can we get language learning literally in your hands?"It's also fun. The program moves away from textbooks and worksheets that many find monotonous, especially when it comes to language."We often associated language-learning with dry high school classes of textbooks and worksheets," Blanco said. "So, to see something that's fun, that you like doing, you're deceiving yourself. 'Well, I can't possibly also be learning, I'm enjoying it too much.'" 2655

NEW YORK (AP) — Getting an Amazon package delivered from the sky is closer to becoming a reality. The Federal Aviation Administration said Monday it has granted Amazon approval to deliver packages by drones. Amazon says the approval is an important step, but added that it is still testing and flying the drones. It did not say when it expected drones to make deliveries to shoppers. Last year, Amazon unveiled self-piloting drones that are fully electric, can carry 5 pounds of goods and are designed to deliver items in 30 minutes by dropping them in a backyard.The FAA said Amazon is the third drone delivery service to win flight approval. Delivery company UPS and a company owned by search giant Google won approval last year. 739

North Korean leader Kim Jong Un will shut down his nuclear test site in May and invite experts and journalists from South Korea and the United States into the country to ensure "transparency" around its closure, South Korea's presidential office said Sunday.It is the latest breakthrough on the peninsula ahead of a meeting between Kim and US President Donald Trump, who said Saturday that talks could take place within "three to four weeks."A senior spokesman for South Korean President Moon Jae-in said Kim made the comments during a landmark summit Friday at the demilitarized zone between the two countries, when Kim became the first North Korean leader to step into South Korean territory since fighting ended in the Korean War in 1953.Kim told Moon during the summit that he had no intention of targeting the US or the South with nuclear weapons, the South Korean President's office said Sunday."The United States, though inherently hostile to North Korea, will get to know once our talk begins that I am not the kind of person who will use nuclear weapons against the South or the United States across the Pacific," Kim was quoted as saying by Moon's spokesman Yoon Young-chan on Sunday."There is no reason for us to possess nuclear weapons ... if mutual trust with the United States is built through frequent meetings from now on, and an end to the war and non-aggression are promised."Friday's pageantry and face-to-face talks -- the first between leaders of the two Koreas since 2007 -- culminated in Kim and Moon issuing a joint statement committing to the "complete denuclearization" of the peninsula, calling for the end of the Korean War, and heralding a "new era of peace."Kim had previously announced the conclusion of North Korea's nuclear testing program and the shuttering of the Punggye-ri complex, saying on April 20 that it had already "completed its mission."In the comments released by Moon's office on Sunday, Kim also refuted claims by Chinese scientists earlier in the week that parts of the site had been so badly damaged by previous explosions that it may now be unusable."Some claim we are closing down an unusable test site, but if they come and see, they will understand that there are two bigger tunnels than the existing test facilities and that they are in a very good condition," Kim said, according to Yoon.President Moon "immediately welcomed" Kim's decision to make the process around the closure public, and the two leaders agreed to consult each other about the timeline for inviting South Korean and US experts and journalists "as soon as the North is ready," Yoon said Sunday.Kim also announced during the summit that Pyongyang would change its time zone by half an hour to align it with Seoul time, reversing a decision made just three years ago in 2015, Moon's office said Sunday."There were two different clocks in the reception hall at Peace House. One was for Seoul time and the other for Pyongyang time, which made my heart heavy," Moon's office quoted Kim as saying. "Let's first unify the two different times of the two Koreas." 3087

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