成都眼示教放大模型昆明髋关节剖面模型,重庆锥体外系模型,山西喉软骨模型,湖北毛发模型,哈尔滨高级创伤评估模块,浙江头部、颈部局解模型,石家庄一体化关节镜训练模拟器

Can it ever really be Christmas without Mariah Carey?The self-proclaimed "Queen of Christmas" has landed the No. 1 spot on the Hot 100 for her famous holiday hit, "All I Want for Christmas Is You."This is the first time the 25-year-old song has hit No. 1. The song's previous record was No. 3 on the chart.Now a holiday classic, the song was first released in 1994 on the Carey's "Merry Christmas" album. She was 24 when she recorded it."All I Want for Christmas" has been featured in "Love Actually" and is used as Carey's official holiday kick-off anthem every year. Ariana Grande and CeeLo Green have covered the tune.To date, Carey has earned more than million in royalties off the song.Since 2014, she has performed a concert in honor of the classic song annually.Amazon is 795

British Prime Minister Boris Johnson has asked the Queen to suspend the UK Parliament from mid-September, a move that would shorten the time available to lawmakers to block a no-deal Brexit and has been decried by critics as a "constitutional outrage."Parliament would be "prorogued" until October 14, Johnson said in a statement. Brexit is due to happen on October 31, and Johnson has promised the UK will leave the European Union on that date with or without a deal.Members of Parliament (MPs) are due to return from a summer break on September 3, and the government's move means they will effectively have around a week to pass any legislation to prevent a no-deal Brexit.Johnson's plan will be considered at a meeting of the Privy Council at the Queen's Balmoral estate, according to reports. The Queen would have to formally approve the request.British governments usually arrange for a new parliamentary session to begin every year. New sessions start with a Queen's Speech, which outlines the government's legislative priorities for the session. But former Prime Minister Theresa May allowed the previous session to drag on, as she repeatedly attempted to persuade lawmakers to pass her Brexit deal.According to the Press Association, Commons Speaker John Bercow called the move a "constitutional outrage.""It is blindingly obvious that the purpose of prorogation now would be to stop Parliament debating Brexit and performing its duty in shaping a course for the country," he said.'Do or Die'During the televised interview on Wednesday, Johnson denied that he was seeking to prevent Parliament from limiting his Brexit plans."That is completely untrue. If you look at what we're doing, we're bringing forward a new legislative program," he said."We need to get on with our domestic agenda and that is why we are announcing a Queen's Speech for October 14," Johnson.In a letter to lawmakers, the Prime Minister said Parliament "will have the opportunity to debate the Government's overall program, and approach to Brexit, in the run up to EU Council, and then vote on this on 21 and 22 October, once we know the outcome of the Council."Johnson is demanding that the EU reopens the Brexit agreement, which European leaders have been reluctant to do.However, "should I succeed in agreeing a deal with the EU, Parliament will then have the opportunity to pass the Bill required for ratification of the deal ahead of 31 October," Johnson wrote.But his "do or die"' position on Brexit has prompted a number of UK opposition party leaders to agree on a strategy to avert a no-deal Brexit on Tuesday.Options include "the possibility of passing legislation and a vote of no confidence," according to a joint statement from the UK's Labour Party, SNP, Liberal Democrats, Plaid Cymru, the Green Party and the Independent Group for Change.Opposition politicians were furious about the move on Wednesday."Unless MPs come together to stop him next week, today will go down in history as a dark one indeed for UK democracy," Scotland First Minister Nicola Sturgeon 3070

An investigation by the State Department released on Friday said 38 individuals employed at one time by the State Department sent classified emails to Hillary Clinton's private email server and found nearly 100 violations of classification rules.The Washington Post 278

Britain's aviation authority is banning all commercial Boeing 737 MAX passenger flights from UK airspace, following Sunday's fatal plane crash in Ethiopia."We have, as a precautionary measure, issued instructions to stop any commercial passenger flights from any operator arriving, departing or overflying UK airspace," the UK Civil Aviation Authority (CAA) said in a statement.Earlier on Tuesday, aviation authorities in Singapore, Australia, Malaysia and Oman temporarily suspended Boeing 737 MAX services after Sunday's MAX 8 flight from Addis Ababa to Nairobi reported technical problems and asked for permission to turn back, before crashing into a field six minutes after takeoff, killing all 157 people on board. Investigations are taking place into the cause of the crash.This is the second time in less than six months that this model has crashed soon after taking off. A new Lion Air Boeing 737 MAX 8 flight went down over the Java Sea off Indonesia last October, killing 189 people."Our thoughts go out to everyone affected by the tragic incident in Ethiopia on Sunday," a CAA spokesperson said in a statement."The UK Civil Aviation Authority has been closely monitoring the situation, however, as we do not currently have sufficient information from the flight data recorder we have, as a precautionary measure, issued instructions to stop any commercial passenger flights from any operator arriving, departing or overflying UK airspace."The UK Civil Aviation Authority's safety directive will be in place until further notice."We remain in close contact with the European Aviation Safety Agency (EASA) and industry regulators globally."In a statement, Singapore's Civil Aviation Authority announced it would suspend all variants of the Boeing 737 Max aircraft from entering or leaving the city-state, a move affecting SilkAir, China Southern Airlines, Garuda Indonesia, Shandong Airlines and Thai Lion Air.While no Australian airlines fly the 737 MAX, Australia's Civil Aviation Safety Authority said it would temporarily suspend airlines from flying all Boeing 737 MAX jets to or from Australia.Oman said on Twitter it is temporarily suspending operations of Boeing 737 MAX aircraft into and out of its airports until further notice.Malaysia announced that it would suspend the MAX 8 aircraft flying to or from and transiting the country until further notice. No Malaysian carriers currently operate the model.Airlines including Ethiopian Airlines, Aeromexico, Cayman Airways, South Africa's Comair, South Korea's Eastar Jet and Aerolíneas Argentinas and all Indonesian airlines have said they are temporarily not using the 737 MAX 8.Those decisions follow the lead of China's aviation administration, who on Monday ordered that all domestic Boeing 737 MAX 8 jets be out of the air by 6 p.m. local time, due to its principle of "zero tolerance for safety hazards."China has one of the world's largest fleets of Boeing 737 MAX 8, operating 97 of the planes, according to Chinese state-run media.The fallout has appeared to affect Boeing's bottom line. The aircraft maker's stock dropped 8% Monday, with investors voicing concerns about the 737 and 3173

Authorities say at least four people have died after severe storms swept across parts of the U.S. South. Three people were killed in Louisiana, including an elderly couple found near their trailer home Saturday by firefighters.In Texas, one person died when a car flipped into a creek. Tornadoes have destroyed homes in Arkansas and Missouri and also caused damage in Oklahoma. The storms also unleashed downpours that caused widespread flash flooding. Weather forecasters issued tornado warnings for parts of Mississippi. 534