Red is usually ________ danger so traffic lights include red ones.
A.marked with
B.lined with
C.related with
D.associated with
网友回答
D解析句意：红色总与危险联系起来，因此交通信号灯包括红灯。根据句意，可直接排除A、B两项；associate...with...--join (people or things) together; connect (ideas, etc) in one's mind将（人或事物）联系起来；在头脑中联想（主意等）；be related to也是“与……有联系”，但题干中用的是be related with，因此也被排除。