判断题

线路的设计速度越高，则圆曲线的半径越大。

答案：正确

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单项选择题

The difference between slope and elasticity is that slope
A、is a ratio of two changes, and elasticity is a ratio of two percentage changes.
B、is a ratio of two percentage changes, and elasticity is a ratio of two changes.
C、measures changes in quantity demanded more accurately than elasticity.
D、none of the above; there is no difference between slope and elasticity.

高纬度地区的土壤年恒温层深度比低纬度地区要。

答案：深或大