江苏上肢带骨附肌肉起止点着色模型(南昌恒牙立体模型) (今日更新中)

A Juul representative repeatedly told a ninth-grade classroom that the company's e-cigarette was "totally safe" before showing underage students the device, according to two teenagers who testified under oath to Congress on Wednesday.The comments came at the first of two 284

1) When does daylight saving time end?Daylight saving time ends Sunday, November 3 at 2 a.m. when clocks will fall back one hour to 1 a.m. This means that sunrise and sunset times will be one hour earlier starting Sunday. It also means that there will be an extra hour to sleep Sunday morning. 2) Who is affected?Almost all Americans, except for those in Hawaii, most of Arizona and U.S. territories, will need to make sure their clocks move back an hour. Many electronic devices, such as televisions, computers and smartphones, will automatically move back. Non-digital clocks will need to be reset manually.3) Why is daylight saving time necessary?Depending on whom you ask, it is not. What daylight saving time does is shift an hour of daylight from the morning to the evening. Governments implemented daylight saving time as a measure to conserve energy. While Americans conserve some energy in the evening with more daylight, research has found that the benefit is negated by increased energy usage in the morning.4) Why not have daylight saving time year round?It has been tried before. Most recently, President Richard Nixon implemented year-round daylight saving time in 1974 as America was affected by an energy shortage. The act ended in 1975 as Congress established a standard practice for daylight saving time, allowing for winter mornings to have more daylight, so more people could go to work and school in the daylight.Also, the legislature in Florida approved year-round daylight saving time in 2018, but the proposal needs approval of Congress. Several other states are also considering petitioning Congress to eliminate daylight saving time.5) What is the history of daylight saving time?Many consider Benjamin Franklin as the inventor of daylight saving time, though he only suggested that Parisians wake up earlier to enjoy more of the daylight, and to conserve candle wax. According to the University of Washington assistant professor of economics Hendrik Wolff, Germany during World War I was the first nation to implement daylight saving time. The practice spread to America during World War II. The European Union voted earlier this year to end daylight saving time as soon as 2021. Member nations could decide to move its standard time up an hour, effectively making it daylight saving time year-round. 2340

"The category is love, y'all," actor Billy Porter said while accepting his Emmy award for lead actor in a drama series.Porter, who was honored for his work in 171

A draft confidential memo from the Internal Revenue Service last fall determined that tax returns must be surrendered to Congress unless the president opts to invoke executive privilege, 199

A 5-year-old child suffered life-threatening injuries when, according to witnesses, a man either threw or pushed the child from the third floor of the Mall of America in Bloomington, Minnesota, police said Friday.Bloomington police Chief Jeff Potts told reporters that police were called to the mall at 10:17 a.m. local time, and initial information suggested a child had fallen from the third level of the mall's interior to the first level.Additional information from witnesses indicated the 5-year-old might have been pushed or thrown, Potts said.Police officers gave the child first aid along with witnesses, Potts said."The child did suffer significant injuries," he said. "The child has been transported to the hospital and has been receiving care." 767

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