A:着凉(zhuó)搓捻稍逊风骚(差)
B:踌躇(chú)罔然舍身求法(舍弃)
C:栖息(qī)笑柄因地制宜(根据)
D:镂空(lòu)轩榭自出心裁(裁剪)
已知抛物线y=ax2﹣4a(a>0)与x轴相交于A,B两点(点A在点B的左侧),点P是抛物线上一点,且PB=AB,∠PBA=120°,如图所示.
I got on the bus and found a seat near the back, and then I noticed a man ____ (sit) at the front.