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问题 单项选择题 A1/A2型题

补体结合试验的指示系统是指（）

A.抗原

B.抗体

C.补体

D.SRBC与相应溶血素

E.已知抗原（或抗体）与待测抗体（或抗原）

答案

参考答案：D

解析：补体结合试验是用免疫溶血机制做指示系统，来检测另一反应系统抗原或抗体的试验。其中反应系统（抗原与抗体）与指示系统（绵羊红细胞与溶血素）争夺补体系统。

问答题

综合性练习。

       在我们身边，父母均在外打工的儿童比比皆是。这些儿童被称为留守儿童。目前我国留守儿童多达

100万！关注留守儿童，是构建和谐社会的重要内容。为此，学校决定举办以“关注留守儿童”为主题的活动周，请你参加以下活动：

1、请你为本活动周设计一条富有感染力的宣传标语。（不超过15个字）

                                                                                                  

2、你认为留守儿童面临的主要问题有哪些？至少写出两点。

①                                                                                               

②                                                                                               

3、关注留守儿童，要靠全社会的共同努力。为了解决留守儿童的问题，请你向有关部门或人士（如学校、当地政府、社会各界、家长等）提两条建议。

①                                                                                                    ②                                                                                               
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单项选择题

The grid computing is a new (66) technology connecting the distributed and (67) resources to the high-speed network and integrating a super-computer of processing capacity. The significance and architecture of the grid computing is explained. Several kernel technology such as OGSI, resource management, task management, task scheduling, high rate communication and security are described. Aiming at the particularity of the grid computing environment a mechanism similar to the technology of the search engine is designed to registry, discovery and (68) the resources in the grid. The whole model of the resource management is built by connecting task manager in the local resource management system to others with P2P model. The task may migrate among the task managers in order to (69) the load. The task users summit may be executed in relatively tight resource set, which will not only decrease the total communication overheads of the whole task but also (70) the performance of the system.

（69）处填（）。

A．decrease

B．balance

C．enhance

D．keep
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