From the first semester of freshman year, physical education class can choose what he wants to learn, including yoga, aerobics, dancing and martial arts. There are all kinds of ball games, but in the end they can't escape the test of swimming. In the second semester of sophomore year, boys swim 50m and girls swim 25m. Senior two can't swim next semester. If she fails the exam, she will have to retake it. However, no matter what you choose, there will be four water-saving middle schools every semester, and the teacher will also teach you to swim. Usually, the swimming pool is open from 5: 00 pm to 6: 00 pm15, and from 4: 30 pm to 5: 45 pm on Saturday and Sunday, but you must enter the library with a swimming card. 10 card 20 yuan, 20 cards 35, 30 cards 50 yuan.

Remember to buy a bathing suit and goggles when you go swimming. It doesn't matter whether you have a swimming cap or not. And remember to go early when you go swimming. Otherwise, many people, like Jiaozi, can't swim, so they can only take a bath and go ashore early. There are few people in the shower room at this time, so there is no need to queue up.