展开
Tips(小提示): Time is gold,money can't buy time. 一寸光阴一寸金,寸金难买寸光阴。 We should cherish the time ! 我们应该珍惜时间!
1 It’s time for class-英语课件
1 These are pandas-英语课件
1 We have a big living room-英语课件
1It’s on the first floor-英语课件
1Is this your classroom？-英语课件
2电磁铁的磁力（一）
