这个标志是何含义？（）
A．注意双向行驶
B．靠两侧行驶
C．可变车道
D．注意潮汐车道
参考答案：D
分数单位随等分的份数而变化。[ ]
Vegetables and meats are __________ and mixed in various ways into some dishes to serve the guests. [ ]
A. cut in
B. cut up
C. cut down
D. cut off
