在有机车运行的线路维修轨道时,区段的两端()以外必须设红灯示警,并设专人防护和指挥机车的停止。
A、20m
B、40m
C、80m
参考答案:B
句型转换
1. You used to be really shy, ___ ___ _?(改为反意疑问句)
______
2. I used to play the guitar.(改为一般疑问句)
_ you_____ to play the guitar?
3. I don't know how I can swim.(改为同义句)
I don't know______ ___ swim.
4. The boy used to watch Engljsh-language TV.(对画线部分提问)
______did the boy used to _____?
5. I'm still afraid of the dark.(改为同义句)
三合油中的三种调料是()。
A.酱油、醋、辣椒油
B.酱油、醋、芥末油
C.酱油、醋、麻香辣油
D.酱油、醋、麻油