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问题 多项选择题

铁路对营业线的无缝线路区段进行加固施工作业时，应对线路进行锁定，否则应对施工范围内的元缝线路（），然后再进行加固。

A.A

B.B

C.C

D.D

E.E

答案

参考答案：A, B

改错题

Last Sunday morning, when I was having a walk in the park near my home, I came across a crew make a new film with one of my favourite actor. I didn’t have my camera with me at time, but I rushed back home to get . Unfortunately, by the time I got back, theyhave finished the scene and the actor couldn’t be seen everywhere. I was really disappointing and about to leave when he walked out a building. He was right there in the front of me! I couldn’t believe my luck-not only did I had my photo taken with him, but he signed his name on my shirt!
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选择题

下列说法正确的是（　　）

A．直布罗陀海峡是ri本工业的海上生命线

B．酷寒、烈风、多雨是南极地区的主要气候特征

C．欧洲西部地区海岸线平直

D．世界最大的盆地在非洲
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