研究者先测量所有被试与任务呈高相关的属性，然后根据测得的结果将被试分成属性相等的实验

物体在平面镜中成像的大小，决定的因素是（　　）

A．平面镜的大小

B．平面镜放置的位置和角度

C．物体离开平面镜的距离

D．物体大小

正确处理医际关系的原则是（）

A.根据职务、职称不同，区别对待

B.根据学历、职务的高低，分配发展机会

C.彼此信任、互相协作和监督

D.互相尊重，"井水不犯河水"

E.互相尊重，坚持独立，注重自我发展

下列关于学生学业成绩评定叙述正确的是( )。

A．评定学生学业成绩，一般采用百分制记分法和等级制记分法

B．一般说，题的数量多、便于给小分的，用等级制较便利

C．题的数量不多、开卷、理解和灵活运用的题用百分制较方便

D．在成绩评定时，不能把等级制换算成一定的分数

最古老、最原始、结构最简单的动物是______，身体由______个细胞构成．

Ravi, like many project (1) , had studied the waterfall model of software development as the primary software life-cycle (2) . He has all set to use it for an upcoming project, his first assignment. However, Ravi found that the waterfall model could not be used because the customer wanted the software delivered in stages, something that implied that the system had to be delivered and built in (3) and not as (4) . The situation in many other projects is not very different. The real world rarely presents a problem in which a standard process, or the process used in a previous project, is the best choice. To be the most situation, an existing process must be (5) to the new problem. A development process, even after tailoring, generally cannot handle change requests. To accommodate change requests without losing control of the project, you must supplement the development process with a requirement change management process.

空白（4）处应选择（）

A.parts

B.modules

C.software

D.awhole