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问题 单项选择题

某群桩基础的平面、剖面和地基土层分布情况如题49～54图，地质情况如下：

①杂填土其重度γ=17.8kN/m3；

②淤泥质土其重度γ=17.8kN/m3，桩的极限侧阻力标准值qsik=20kPa，属高灵敏度软土；

③黏土其重度γ=19.5kN/m3，桩的极限侧阻力标准值qsik=60kPa，土的压缩模量Esl=8.0MPa；

④淤泥质土地基承载力标准值fk=70kPa，压缩模量Es2=1.6MPa；在桩长深度范围内务土层的加权平均土层极限摩擦力标准值qsk=21kPa；

⑤作用于桩基承台顶面的竖向力设计值F=3600kN，桩基承台和承台上土自重设计值C=480kN。本桩基安全等级为二级。

软弱下卧层地基承载力设计值与下列（）项值接近。

A．249.52kPa

B．267.47kPa

C．273.82kPa

D．284.31kPa

答案

参考答案：A

解析：

先求得：γo=9.35kN/m3，由《建筑地基基础设计规范》查得ηd=1.0，则

fx=fk+ηdγo(d+z-0.5)

=70+1.0×9.35×(1.5+15+3.2-0.5)=249.52(kPa)

问答题

Our little boy came up to his mother in the kitchen one evening while she was fixing supper, and handed her a piece of paper that he had been writing on. After his morn dried her hands on an apron, she read it, and this is what it said:
For cutting the grass $ 5.00
For cleaning up my room this week $ 1.00
For going to the store for you $ 0.50
Baby-sitting my kid brother while you went shopping $ 0.25
Taking out the garbage $ 1.00
For getting a good report card $ 5.00
For cleaning up and raking the yard $ 2.00
Total owed : $ 14.75
Well, I’ll tell you, his mother looked at him standing there expectantly, and boy, could I see the memories flashing through her mind. So she picked up the pen, turned over the paper he’d written on, and this is what she wrote:
For the nine months I carried you while you were growing inside me, no charge.
For all the nights that I’ve sat up with you, doctored and prayed for you, no charge.
For all the trying times, and all the tears that you’ve caused through the years, there’s no charge.
For all the nights that were filled with dread, and for the worries I knew were ahead, no charge.
For the toys, food, clothes, and even wiping your nose, there’s no charge, son.
When you ______, the cost of my love is no charge.
Well, friends, when our son finished reading what his mother had written, there were great big old tears in his eyes, and he looked straight up at his mother and said: "Mom, I sure do love you. "
And then he took the pen and in great big letters he wrote: "PAID IN FULL. "

What’s the best title of’ the passage
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单项选择题

马克思主义追求的根本价值目标是（）。

A.实现人的自由而全面的发展

B.实现人的自由发展

C.实现人的全面发展

D.实现全社会的发展
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