问题
选择题
Teterboro is the same airport where a plane took off earlier this morning before colliding (碰撞)with a sightseeing helicopter over the Hudson River.
A．where
B．as
C．that
D．which
答案
答案：A
四个选项分别表示哪儿、由于、那个和哪一个，在非限定性定语从句中当前置词为地点类词语时引导词用where，airport机场，选A。