问题 单项选择题 A1/A2型题

下列哪项是多器官功能障碍综合征(MODS)最主要的发病机制()

A.炎性反应失控,导致组织细胞损害

B.炎症细胞激活,炎性物质释放

C.氧自由基大量释放

D.内皮细胞损伤

E.肠道细菌异位

答案

参考答案:A

解析:正常情况下,局部炎症反应有助于清除细菌和修复损伤组织,是一种人体保护机制。但当炎症反应异常放大或失控时,炎症反应对机体的作用从保护性转变为损害性,导致自身组织细胞死亡和器官衰竭。因此机体炎症反应失控,最终导致机体自身性破坏是MODS的根本原因,而炎症细胞激活、炎性物质释放、氧自由基大量释放、内皮细胞损伤和肠道细菌异位均是机体炎症反应失控的表现。故答案应选A。

填空题
单项选择题

So long as teachers fail to distinguish(differ) between teaching and learning, they will continue to undertake to do for children that which only children can do for themselves. Teaching children to read is not passing reading on to them. It is certainly not endless hours spent in activities about reading. Douglas insists that "reading cannot be taught directly and schools should stop trying to do the impossible".

Teaching and learning are two entirely different processes. They differ in kind and function. The function of teaching is to create the conditions and the climate that will make it possible for children to plan cleverly the most efficient system for teaching themselves to read. Teaching is also a public activity. It can be seen and observed.

Learning to read involves all that each individual does to understand the world of printed language. Almost all of it is private, for learning is an occupation of the mind, and that process is not open to public scrutiny.

If teacher and learner roles are not interchangeable, what then can be done through teaching that will aid the child in the long search for knowledge Smith has one principle rule for all teaching instructions. "Make learning to read easy, which means making reading a meaningful, enjoyable and frequent experience for children. "

When the roles of teacher and learner are seen for what they are, and when both teacher and learner fulfill them properly, then much of the pressure and feeling of failure for both is got rid of. Learning to read is made easier when teachers create an environment where children are given the chance to solve the problem of learning to read by learning.

The word "scrutiny" (Paragraph 3) most probably means " ()".

A. unbelief

B. control

C. inquiry

D. observation