1．The rocketing housing price in Shanghai has set ________ heated debate.
【答案】a
【详解】
考查冠词。句意：上海飞涨的房价引发了激烈的争论。debate为可数名词，此处表泛指应用不定冠词，heated 是发音以辅音音素开头的单词，应用a。短语为set a heated debate“引发激烈的争论”。故填a。
2．While passengers love to complain about taxi drivers, the drivers of Beijing are in ________league of their own.
【答案】a
【详解】
考查冠词。句意：虽然乘客喜欢抱怨出租车司机，但北京的出租车司机却独树一帜。结合句意表示“独树一帜，有自己的特点”可知短语为be in a league of one’s own。故填a。
