( )作为具有特定意义的市场，与“市场”本身的定义一样，包含两层意义；一是指进行资

设全集U＝R，A＝{x|2^x(x－2)<1}，B＝{x|y＝ln(1－x)}，则A∩(∁RB)＝(　　)

A．{x|x≥1}  B．{x|1≤x<2}

C．{x|0<x≤1}  D．{x|x≤1}

根据《物权法》的规定，共有人对外债务承担的责任属于( )。

A．按份责任

B．连带责任

C．补充责任

D．有限责任

Losing a job or not being able to find one almost always brings unwelcome changes. If you’ve lost a job, the first feeling is often one of shock. On top of the loss of income, many people find the whole routine of their life is shattered, their contact with other people reduced, their ambitions halted and their identity as a worker removed.
There may be good feelings too—it’s nice to be able to lie in bed in the morning, to spend more time with children, or to have more time to think—a better job may be just around the corner. But, unless a better job does turn up, chances are the days start getting longer and the time becomes harder to fill. Many people pass through periods of difficulty in sleeping and eating. They feel irritable and depressed, often isolated and lonely.
Despite all these problems, unemployment can be a chance for a fresh start. You can discover that it provides an opportunity to sort out or rethink what you want from life and how best you can get it. You can use the time to plan how to find a new job, learn a new skill, develop your hobbies, see if you can run your own business, do some voluntary work in your community or meet new people. It’s up to you.

Unemployment almost always brings changes that are ______.

A．unpleasant

B．unsuitable

C．untenable

D．unworthy

某一黏性土层，根据6件试样的抗剪强度试验结果，经统计后得出土的抗剪强度指标的平均值为φ_m＝17.5°，c_m＝15.0kPa；并算得相应的变异系数δ_φ＝0.25，δ_c＝0.30。根据《岩土工程勘察规范》（GB50021—2001），则土的抗剪强度指标的标准值φ_k，c_k分别为（）。

A．φ_k＝13.90°，c_k＝11.3kPa

B．φ_k＝11.40°，c_k＝8.7kPa

C．φ_k＝15.30°，c_k＝12.8kPa

D．φ_k＝13.10°，c_k＝11.2kPa

若A，B为非零常数，c₁，c₂为任意常数，则微分方程y"+k²y=cosx的通解应具有形式
(A) c₁coskx+c₂sinkx+Asinx+Bcosx． (B) c₁coskx+c₂sinkx+Axsinx．
(C) c₁coskx+c₂sinkx+Axcosx． (D) c₁coskx+c₂sinkx+Axsinx+Bxcosx．