—Did you go to the zoo yesterday?
—Yes. The bus trip us about 4 hours. There was too much traffic on the road.
A：took
B：paid
C：spent
D：cost
went，by，there，we，plane(．)
____
教练对刘翔10次110米跨栏训练的成绩进行统计分析，为了解他的成绩是否稳定，则需知道刘翔这10次成绩的（ ）
—____ bad weather!
本初子午线是（ ）
