估算面积是18平方米的正方形，它的边长是______米（误差小于0.1米）．

小题1: Tom had dinner with his family in a restaurant last night. (改为否定句)

Tom_________ ___________ dinner with his family in a restaurant last night.

小题2: Most of the students have seen the film “Super Hero”. （改为反意疑问句）

Most of the students have seen the film “Super Hero”, _______  _________?

小题3: The weather in spring is quite changeable. (改为感叹句)

_________ ________ the weather in spring is!

小题4: Jack keeps in touch with his friends in America by e-mail every week. (对划线部分提问)

________ ________ Jack keep in touch with his friends in America every week?

小题5: The 22^nd Winter Olympic Games took place in Sochi Russia. (保持句意基本不变)

The 22^nd Winter Olympic Games _______  ______ in Sochi Russia.

小题6: “What will life be like in the future?” the little girl asked her father.（合并成宾语从句）

The little girl asked her father _______ life _______ be like in the future.

小题7: it, without, is, you, for, success, to achieve, impossible, work (连词成句)

________________________________________________________________________.

如果函数f(x)的定义域为R，对于m，n∈R，恒有f(m＋n)＝f(m)＋f(n)－6，且f(－1)是不大于5的正整数，当x>－1时，f(x)>0．那么具有这种性质的函数f(x)＝         ．(注：填上你认为正确的一个函数即可)

病历摘要：患者男，49岁。腰部感觉钝痛，运动后出现上腹部及腰部疼痛，伴出汗、恶心呕吐，间歇出现疼痛后肉眼血尿或大量尿液来医院就诊。体检：T37℃，P92次/分，R20次/分，血压15/9kPa（113/68mmHg），上腹疼痛沿输尿管行径向下腹和外阴部放射，触到肿大的肾脏，伴明显肾区扣击痛。

初步诊断主要考虑哪些疾病？（）提示：平片显示左肾盂有1.2cm和左肾下盏2.8cm的2粒结石，轻度肾积水，尿比重1.007，血清尿素氮3.2mmol/L。

A.胃炎

B.腹膜炎

C.上尿路结石

D.肾结石

E.膀胱肿瘤

F.肾盂结石

G.肾功能不全

H.肾积水

I.胆石症

通过某种图形形式来确定和形象体现项目组织内组织单元或个人之间相互工作关系的管理工具是（）。

A．组织关系图

B．鱼刺图

C．巴雷特图

D．职责安排矩阵

谁的思想被罗素称为“英国经验论的‘逻辑终局’”？（）

A、约翰·洛克

B、大卫·休谟

C、乔治·贝克莱

D、亚当·斯密