钢梁端部，拱桥温度伸缩缝和拱顶等处前后各（）m范围内，不得有钢轨接头。
A、1
B、2
C、3
D、5
参考答案：B
— _____ I have a look at your new MP3?
— Certainly. Here you are. [ ]
A. Must
B. Need
C. May
D. Would
要求：(1)意见合理，具体可行；(2)条理清楚，语言简明；(3)字数不超过300字。
