题目

 The price of the house ________than before. I can't afford one. A. is more expensive    B. is much higher   C. are much cheaper    D. are much lower 答案：B11．如果实数a，b在数轴上如图所示，化简$\sqrt{{{（2-a）}^2}}-\sqrt{{{（a-3）}^2}}$的结果为（　　）A．5B．1C．-2a+5D．2a-5