京﹣沈高速铁路河北承德段通过一隧道,估计从车头进入隧道到车尾离开隧道共需45秒,整列火车完全在隧道的时间为32秒,车身长180米,设隧道长为x米,可列方程为____ .
设函数f(x)=ln(x-1)(2-x)的定义域是A,函数g(x)=lgax-2x-1的定义域是B,若A⊆B,则正数a的取值范围是 ( )
—What are you going to do after the exams to Senior High School?
—I am going to _____________ for vacation.