射门.
(1)A;(2)C;(3)A;(4)B;(5)C;(6)B;(7)A;(8)C;(9)B;(10)B;(11)A
①Tracy friend bicycle thirteen ropes see you talk about him
②how old are you I am nine years old
长江沿江地区是一个典型的“( )状”区域.
下列各式是最简二次根式的是( )