下列叙述中正确的是______。A．软件交付使用后还需要进行维护 B．软件一旦交付使

男性，20岁，近5年反复咳嗽、咳脓痰，加重伴发热2天，入院抗感染治疗后病情可暂时短期缓解

询问病史需注意（）。

A.过敏性鼻炎

B.麻疹、百日咳史

C.心肌炎史

D.风湿热史

E.食物过敏史

下列说法正确的是（ ）。

A．在Visual Basic 中的对话框分为两种类型：预定义对话框和自定义对话框

B．自定义对话框由用户根据自己需要定义的

C．预定义对话框是用户在设置程序代码后定义的

D． MssgBox 函数是用户的自定义对话框的函数

血清与血浆的区别在于前者（）

A.缺乏纤维蛋白原 

B.缺乏一些参与凝血的物质 

C.含有红细胞 

D.含有大量清蛋白 

E.增加了一些凝血过程产生的活动物质

The Coalition for the Homeless is an organization that seeks to address the needs of the homeless population in the United States．It is a network of offices, some of which provide food and houses for the homeless population．and some of which fight for the passing of laws that would give every American the right to a place to call home．According to the Coalition’s studies, of over two hundred million people living in the United States, up to three million are homeless—and the number is still growing since the late 1970s, fast rising house prices, large cuts in government supported housing programs, and economic recession have made it impossible for many Americans to meet housing costs．Sadly, this has resulted in a number of persons being forced to leave their homes and or unable to find new affordable homes．According to another research．families with children appear to be the fastest-growing part of the homeless population, making up 39% of it．The old idea of a homeless person, that of the single man who gets drunk all the time, is no longer true．A much larger part of the population now finds itself homeless．Even worse, once a person becomes homeless, he often finds it impossible to find a job, since most employers require anyone who wants a job from them to provide a home address on a job application

小题1:The word “address” in the first line probably means         ．

A．talk about

B．deal with

C．fight for

D．write to小题2:How many people are homeless in the U．S．according to the Coalition studies?

A．39% of the population．

B．200 million people．

C．About 3 million people．

D．About one-fifth of the population．小题3:Homeless people often have difficulty finding a job because________．

A．they have no home addresses

B．they mostly have a drinking problem

C．they aren't supported by government programs

D．they often don't have enough work experience小题4:What is the main cause of the rising number of the homeless in the U．S．?

A．The passing of new housing laws．

B．The fast growth of family size．

C．The slow construction of houses．

D．The ever-rising price of housing．

方案设计时，应根据试验目的计算试件在各种临界状态下相应的荷载及变形预估值，包括（）及相应的变形等。

A.开裂荷载

B.断裂荷载

C.屈服荷载

D.极限荷载