He dressed himself quickly, _____ his schoolbag and went to school.

A．carrying

B．to carry

C．carried

D．carries

某民用建筑5层砌体承重结构，底层承重墙240厚墙体传至基础±0.000处的荷载效应F_k=200kN/m，如果持力土层土工实验的实验成果如下表格。

地质土层剖面及土的工程特性指标如图所示。

基础埋置深度可以选择为（）。

A．0.5m

B．0.8m

C．1.5m

D．1.6m