We are learning English, but how can we learn English well? A student can know a lot about English, but maybe he can not speak English.
If you want to know how to swim, you must get into the river. And if you want to be a football player, you must play football. So , you see, you can learn English only by using it. You listen to your teacher carefully in class. You must read your lessons every day. You must speak English to your English teacher and classmates and also you must write in English. Then one day, you may find your English very good.

如图所示，公交车后门左右扶杆上各装有一个相当于开关的按钮．当乘客按下任意按钮时，铃声响起，提醒司机有人要下车．选项图中符合要求的电路是（   ）

山西寿阳九五后的小伙儿李某因拒绝服兵役被当地相关部门罚款11万。同时李某将面临禁考公职，禁止升学，禁止出国等严厉处罚。以下对于李某的行为认识正确的是（    ）

用提公因式法分解因式：  x²-2x+x³=____

泼水节是我国哪个少数民族特有的风俗节日（    ）