[Global Times comprehensive report] due to the new epidemic, many parts of the United States are beginning the new school year in the form of online teaching. However, laptops and other online learning devices, the most important items for schools everywhere to start school, are facing huge shortages and long delays, some of which can be as long as months. In an interview with school districts, schools, suppliers, computer companies and industry analysts in 15 states in the United States, the Associated Press found that the world’s three major computer companies Lenovo, HP and Dell said to the U.S. school districts that they had a shortage of nearly 5 million laptops, and that the trump government’s sanctions against Chinese suppliers exacerbated the shortage to a certain extent. Some school districts began to order laptops in the spring, due to large demand and supply chain disruption, delivery has been repeatedly delayed. The Associated Press found that some of the largest school districts in the United States have outstanding orders for laptops or Internet devices. School districts are pleading with the trump administration to solve the problem, and American educators worry that the shortage of computers will exacerbate educational inequality. < / P > < p > the lack of equipment is not the only problem facing the reopening of American schools. Because many students can’t go back to school, they are worried about American parents. According to a recent survey conducted by the New York Times, only one in seven parents said their children would return to school in the fall semester, while for most families who needed someone to take care of and educate their children, four out of five parents said they could not get help from relatives, neighbors, nannies or tutors. According to the chronicle of higher education, as of December 22, 33% of colleges and universities in the United States have decided to adopt distance teaching completely or mainly, 22% of colleges and universities completely or mainly adopt face-to-face teaching, 15% adopt mixed mode, and 30% have not yet decided or adopt other teaching methods. Today, universities that have already started school are facing the enormous pressure of the outbreak of the epidemic. Some schools have to re plan their study plans as soon as they start school. < p > < p > according to ABC, new crown cases have been reported on campus in at least 36 states. The New York Times reported that the University of North Carolina at Chapel Hill had four outbreaks just one week after the opening of school, and all undergraduate courses had to be transferred to the Internet. Although the University of Notre Dame tested all students before school, at least 147 students were diagnosed within two weeks after returning to school. The school decided to turn to online teaching in the next two weeks to control the epidemic.