1限时训练4AI had heard about VR being used in the classroom but didnt think Id ever try it. I actually got a VR headset (耳机) as a New Year present from my friend and started searching for apps online to see whether it could be useful in my classroom. I soon found a free app through Google Cardboard and knew I had a lesson!To use VR in the classroom, you need two things: a smartphone that can download the app or video, and a headset. To find the actual videos wed be watching, I searched through free VR apps like Orbulus, Trench Experience VR and Cardboard. I also found hundreds of videos on YouTube. The key is to find videos made with the 360 cameras. While they dont give the kids a 3-D experience like the apps,theyare still amazingly immersive (沉浸式虚拟现实的) when viewed through the headsets.So far weve had three lessons. I first used the headsets with my seventh grade U.S. History class. The Trench app allows students to“walk”through a trench (战壕) during World War I and learn about many of the tools used during that time. My second activity was working with the sixth grade Geography class. They used the headsets strictly as viewers to watch a 360 video taking them through a rocky landscape. My final activity was the most interesting one, according to the reactions (反应) of my eighth grade Civics students. I was able to find a White House 360 tour that was made a few years ago.For the rest of this year, I plan to continue using apps and 360 videos in my classes. Next year Im going to write to my boss asking for a 360 video camera so that I can begin to create my own VR field trips for the students.1. When did the author get the idea of trying VR in her classroom?A. When she was searching for apps online.B. After she received a VR headset as a gift.C. When she was having a conversation with her friend.D. After she heard about VR being used in the classroom.2. What does the underlined word “they” in Paragraph 2 refer to?A. The kids. B. The apps.C. The videos. D. The headsets.3. Which VR lesson was the most popular one among students?A. The Civics lesson.B. The Science lesson.C. The Geography lesson.D. The U.S. History lesson.4. What will the author do next year?A. Buy a 360 video camera.B. Create 360 videos by herself.C. Take her students on more field trips.D. Try new teaching methods in her classes.B“Hurricane Laura is increasing in strength and is rapidly becoming a disastrous Category 4 storm. It could bring deadly storm surge (风暴潮), terrible wind and flash flooding to the Gulf Coast, and there are no signs it will stop soon,” the National Hurricane Center said in a briefing early Wednesday.Hurricane warnings and storm surge warnings have been given to parts of the Texas and Louisiana coasts. More than half a millionpeople were ordered to evacuate (转移) as the storm came near to the Texas cities of Beaumont, Galveston and Port Arthur. The authorities used a number of buses to collect people and carry them to other areas around Texas, rather than shelter them here, said Allison Getz, a county spokeswoman. A key reason for doing it that way was concerns over the coronavirus pandemic (新冠病毒大流行), which makes it hard to shelter large groups of people in one place, she said. Only 15 to 20 people will be placed on buses, instead of the usual 50.At the Robert A. “Bob” Bowers Civic Center, 14 buses lined up to carry away people who couldnt evacuate themselves, many of them elderly or disabled. Robert Bailey, 68, has lived in Port Arthur since he was 9 and has stayed for every storm thats hit the area until now.“This is a double whammy,” he said as he boarded a bus headed for Huntsville, Texas. “We dont know what its going to be like.”Not everyone was leaving. Simike Babineaux, 38, filled sandbags at a pavilion in downtown Port Arthur as her two kids, Hayden, 8, and Haleigh, 7, happily climbed the mounds of sand. Babineaux said, “Its stressful. We dont want to go because we might get the virus. Were probably going to ride it out.”State emergencies (紧急情况) were announced in Louisiana, and shelters were opened with simple beds set farther apart, among other measures taken to control coronavirus infections (传染病).5. What will happen according to the National Hurricane Center?A. Hurricane Laura will stop in several days.B. Hurricane Laura will become more damaging.C. Hurricane Laura will put thousands of people at risk.D. Hurricane Laura will hit most areas along the Louisiana coast.6. What can we learn from Allison Getzs words?A. People were evacuated at great speed.B. The authorities tried to protect people.C. It was hard to move coronavirus patients. D. Many people were worried about getting ill.7. What does the underlined word “whammy” in paragraph 5 mean?A. Wrong choice. B. Serious failure.C. Difficult situation. D. Stu