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徐州关于4维彩超
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发布时间: 2025-05-30 18:08:31北京青年报社官方账号
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It looks like TikTok has more competition - this time from Facebook.On Wednesday, Facebook launched Instagram Reels, an app that allows users to record 15-second clips set to music, editing the clips by adding effects and filters.The announcement was posted on blog posts from Instagram and Facebook."Reels gives people new ways to express themselves, discover more of what they love on Instagram, and help anyone with the ambition of becoming a creator take center stage," Instagram said in the blog post.The app will be made available to download from the App Store and Google Play Store for free on Monday. 617

  徐州关于4维彩超   

In the race towards a COVID-19 vaccine, there have been a lot of hurdles. In the spring months, it was learning about a novel virus: how it spreads and affects the body. Then, it was developing a vaccine that was not only effective but safe.Now that Pfizer and Moderna have both announced vaccines with nearly 95-percent efficacy, the challenge is not developing one, but rather getting people to actually get the vaccines.“Maybe 10-15 percent of people are just never going to go get a vaccine because they feel strongly against it,” said Katy Milkman, a professor at the Wharton School of Business at the University of Pennsylvania.Earlier in the summer, 72 percent of Americans said they would take a COVID-19 vaccine, according to a study by the Pew Research Center. But in the months that have followed, that number has steadily declined. Now, according to a recent Gallup poll conducted in early November, 42 percent of Americans said they would not get an FDA-approved COVID-19 vaccine. 1001

  徐州关于4维彩超   

In the most direct confrontation between Israel and Iran to date, the two regional enemies exchanged fire for hours during a volatile night in the Golan Heights.The extended barrage of fire comes amid soaring tensions between Israel and Iran, two rivals battling for regional influence, and less than two days after the United States withdrew from the deal to curb Iran's nuclear program.Israel said more than 20 rockets were launched by Iranian forces in Syria towards Israeli-claimed territory late Wednesday, often criss-crossing across the clear night skies. A number of those rockets were intercepted by Israel's Iron Dome aerial defense system, resulting in bright and sudden explosions.Iran's leaders have not yet issued a response to the Israeli accusations or the military strikes, but if confirmed it would be the first time Iranian forces have fired rockets directly at Israeli forces.Israel retaliated with what appeared to be surface-to-surface missiles, and Syrian anti-aircraft batteries hosed the sky with fire in an effort to intercept them. Thunderclaps of Israeli artillery fire reverberated across the frontier between Syria and Israel, with the faint sound of impact echoing back moments later.All night, drones buzzed overhead, heard but not seen in the darkness.In a statement delivered shortly after midnight Thursday, a spokesman for the Israel Defense Forces pinned the blame for the rocket fire on the Quds Force, an elite division of Iran's Revolutionary Guard, which has forces in Syria and is often seen as the face of Iran's regional ambitions.Lt. Col. Jonathan Conricus said the rockets, which were targeted at front-line Israeli military positions in the Golan Heights, were all either downed by aerial defense systems or fell short and landed in Syria.Conricus said Israel responded by successfully hitting dozens of Iranian targets in Syria in what he described as "the largest operation against Iranian targets" in years."Israel has hit almost all of Iran's infrastructure in Syria," Defense Minister Avigdor Liberman said Thursday morning. "If it will rain in Israel, there will be a biblical flood on the other side." He reiterated Israel's stance that this latest offensive was not an ongoing operation."This is not a vast victory or the battle of Stalingrad. It's limited to us and the Quds force in Syria," Liberman said.On Wednesday night, state-run Sana TV, in southern Syria, carried reports that Israel had fired several missiles at the city of Baath in Quneitra, none of which resulted in casualties.A short time later, Syrian state-run media reported that while dozens of "hostile" Israeli missiles had been intercepted in Syrian airspace, at least two others had hit an ammunition depot and destroyed a radar site.The targets included rocket launchers, intelligence posts, military command posts, and weapons depots. No Israeli fighter jets were hit in the strikes, but Conricus said they came under heavy anti-aircraft fire. He added that "ground assets were also used to strike into Syria." 3048

  

It's no secret that smoking and secondhand smoke are not good for your health. But a new study shows just how detrimental secondhand smoke is for children. "In past studies, we found up to nearly one-in-two children who come to the pediatric emergency department are exposed to tobacco smoke," said Dr. Ashley Merianos, an associate professor in the School of Human Services at the University of Cincinnati. Dr. Merianos led the study, comparing 380 children living with a tobacco smoker with 1,140 children who are not. The ethnically diverse study found that the children exposed to secondhand smoke at home were more likely to be hospitalized."We also found that the children who had been exposed had increased respiratory-related procedures, increased diagnostic testing. So, for example, being tested for the flu and laboratory testing, as well as radiologic testing, including x-rays of the chest and lateral airways," said Dr. Merianos.The children who were exposed to secondhand smoke were also more likely to be prescribed medications like steroids or inhalers. "Our findings highlight the need to universally screen for tobacco smoke exposure during every pediatric healthcare visit and provide interventions to reduce and prevent exposure among patients and their families," said Dr. Merianos.Dr. Merianos says intervention is key since hospital emergency departments mostly treat underserved patients with high tobacco use and limited access to information about quitting."I think right now, with the COVID-19 pandemic, there has never been a better time to quit. And the reason I say that is we know that there is emerging evidence that both smoking and vaping make it more likely that you have COVID and more severe COVID symptoms," said Dr. Susan Walley, the Chair of American Academy of Pediatric's section on Nicotine and Tobacco Prevention and Treatment. Dr. Walley says she's not surprised by the results of the University of Cincinnati's study, adding that secondhand smoke exposure has short-and-long-term health effects on children."Children who have secondhand smoke exposure are more likely to have ear infections, pneumonia, asthma and if they have asthma, more likely to have more severe asthma attacks like we see in this study," said Dr. Walley.Dr. Walley says children exposed to tobacco smoking parents or older siblings are also more likely to smoke themselves as they get older. Doctors hope the study highlights the importance of encouraging parents to quit tobacco use for good, for the sake of their own health and the children they love. 2581

  

It took four days for The Associated Press and other media outlets to call the presidential election for Joe Biden and Kamala Harris. Now, recounts and certification of the results will take a bit longer.With races too close to call in Arizona, Nevada and Georgia, Pennsylvania became the battleground that tipped the Electoral College count in Biden’s favor Saturday afternoon.But within hours of declaring victory, President Donald Trump released a statement saying, “Joe Biden has not been certified the winner of any state.”“Technically it's true. Certifying election results takes a while,” said Kira Lerner, the managing editor of Vote Beat, a non-partisan, non-profit covering election administration and voting.“Canvassing is the process of counting the ballots,” said Lerner. “It's what election officials are doing across the country right now. They're working tirelessly, overnight in some cases, to make sure that every single vote is counted in the certification process. Each state has a different deadline.”Certification happens after canvassing – whereby election officials verify that every single ballot was counted and there were no clerical errors. But tallying has taken longer due to record turnout and a surge in mail-in ballots.Still, six states have a deadline of within one week of the election to certify their results and have already done so. (Delaware, Virginia, Vermont, South Dakota, Oklahoma, and Louisiana).In 26 states and Washington D.C., the certification deadline is between November 10 and the 30. (Wyoming, Mississippi, Florida, Massachusetts, Idaho, Arkansas, North Dakota, Georgia, Utah, Pennsylvania, Michigan, Maine, Kentucky, Ohio, North Carolina, New Mexico, Minnesota, Indiana, Washington D.C., Alaska, Alabama, Nebraska, Montana, Iowa, Colorado, and Arizona).In 14 states, the certification deadline is in December. (Wisconsin, Nevada, Kansas, West Virginia, Washington, Texas, Oregon, Connecticut, Illinois, New York, New Jersey, Missouri, Maryland, and California)The remaining states don’t have deadlines. (Hawaii, New Hampshire, Rhode Island, and Tennessee)“It will be some time before we can formally certify the winner of the presidential contest. But that doesn't mean that we won't know without a doubt who our president elect is, which we already do,” said Lerner.And then there are the recounts. In some states, they are automatically triggered when the victory falls within a razor thin margin. In Georgia, for example that’s .5%.But in the majority of states, candidates, political parties and in some cases voters can request a recount.Currently, the Trump administration is calling for recounts in Wisconsin and Georgia.“In Wisconsin, you have two days after the winner of the race has been certified to call for a recount. In other states, like Georgia, the secretary of state has already said that he will be seeking a recount on Donald Trump's behalf.”Lerner says legal challenges and recounts will likely fail to change the outcome of the election. Electors will vote by mid-December and deliver to officials in Washington just before Christmas. It may take a few more weeks but experts say the official results are unlikely to be delayed. 3213

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