题型:名词解释 阅读下列短文,根据短文中的信息完成文后表格。(每空一词)7 NovemberDear Dairy,Today is our Open Day. Our parents come and visit our school on this day.Our school looks nice and big. The playground is very big and our classrooms are clean and bright. We also have an art room, a music room, a biology room and a small hall.The Open Day starts at 9 a.m. in the playground. Everyone watches the students play different sports. Next we go to the art room to enjoy all the students’ pictures at 10 a.m. At 11 o’clock we all go to the school hall for a short meeting, and then we have lunch. After lunch, we have a little rest for half an hour in the hall. At 2p.m.we have a look at all the students’ work in the biology classroom. Finally we go to the music room and listen to some students play music at 4p.m.Everyone has a good time at school on this day.Open DayDate: 76 7thTime 77 Place9a.m.Watch the students 78 sportsPlayground10a.m. 79 students’ picturesArt room11a.m. 80 School hallAfter lunchHave a rest for thirty 81 Hall2p.m. 82 at students’ work 83 classroom4p.m.Listen to 84 Music roomEveryone has 85 on this Open Day. 查看答案
题型:名词解释 如图,水槽中试管内有一枚铁钉,放置数天观察.请回答下列问题:(1)若试管内液面上升,则原溶液呈现______性,发生______腐蚀,正极的电极反应式:______;(2)若试管内液面下降,则原溶液呈现______性,发生______腐蚀,:负极的电极反应式:______. 查看答案