— Excuse me. Could you tell me ______?

— Yes, and New York is the most beautiful place that I have ever lived.

A．when your birthday is

B．what color your bike is

C．if I can join the music club

D．where you were born

简体结构转换层的设计，下列哪一项要求是恰当的

A．转换层上部的墙柱宜直接落在转换层的主结构上
B．8、9度时不宜采用转换层结构
C．转换层上、下的结构质量中心的偏心距不应大于该方向平面尺寸的15%
D．当采用三级转换时，转换梁的尺寸不应小于500mm×1500mm