栏杆和挡脚板均应搭设在外立杆的内侧。上栏杆高度应为（ ）m
A. 0.8
B. 1
C. 1.2
D. 1.5
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纵向扫地杆应采用直角扣件固定在距底座上皮不小于（ ）mm处的立杆上
A. 100
B. 200
C. 300
D. 500
[音频]What does Peter do for a living?
A. He serves in the army.
B. He puts out fires.
C. He acts in films.
D. He builds houses.
[音频]What are the two speakers mainly talking about?
A. Ordinary people who risk their life for others.
B. Ordinary people who make a change in the world.
C. Ordinary people who do remarkable things.
D. Ordinary people who have super power.
[音频]Who has the greatest positive influence on teenagers?
A. Closest friends.
B. Political leaders.
C. Fathers.
D. Mothers.
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