关于厦门南部旅游发展基础的分析，正确的是(　　)

①厦门南部旅游资源数量众多、类型多样、品位较高，有国家级重点风景名胜区　②厦门南部有立体交通网，交通类型齐全，线路格局有很大改善，运输能力强　③厦门社会发展历史悠久，对台关系密切，是我国经济发达的地区　④厦门南部旅游客源市场广阔，旅游接待设施规模大

“一母生九子，连母十个样．”这句俗语说明生物界普遍存在着变异现象．（判断对错）

——Mike, what did our monitor say just now?
—— Every boy and every girl as well as the teachers who _____ to visit the museum _____ asked to be at the school gate before 6:30 in the morning.

He had been so absorbed____ watching the car passing by that he didn’t notice his friends ____.

选出下列单词中不同类的一项（   ）