解:(1)根据题意,得:a2=11--13
This modern hotel, ______ the visitors can enjoy the best service in the city, is ________Mary stayed last time.
正在患流行感冒的病人属于( )
浙江某地农民每逢二、五、八日都到中心集镇赶集,这种交易的风俗是由古代的“草市”发展而来,古代的“草市”更加普遍出现在( )