单选题_____AcolorBtrafficCtransportDtransit
单选题
_____
A
color
B
traffic
C
transport
D
transit
参考解析
解析：
语篇题。由于文章是在讲颜色的多种用途，并提到一些颜色的警示作用，此处很容易推测出高速路上的交通标志和信号灯，都是“颜色代码”，即color codes。
语篇题。由于文章是在讲颜色的多种用途，并提到一些颜色的警示作用，此处很容易推测出高速路上的交通标志和信号灯，都是“颜色代码”，即color codes。
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