题目

阅读理解Tonya, Elsa and Mark arestudents at SAR High School in New York City. It's a school with regularacademic (学术的) classes, but it also givesspecial attention to the performing arts. Tonya likes dancing, Elsa wants to bean artist and Mark is a singer.The students are all 15, andthey're in the 10th grade. They study subjects like English, maths, and science. They also choose aforeign language. Students have many academic classes, but during the schoolday they also take classes in the arts, like dance and music. There is even more for SARstudents after school. There are more than 4如图所示的“热得快”的铭牌上标有“220V 1000W”字样。对于这种字样，下列说法中正确的是A. 正常工作的电压为220V B. 正常工作时电流为0.22AC. 正常工作时电阻约为48.4Ω D. 正常工作10min消耗的电能为1×104J