“2.5V,0.2A”的小灯泡在正常工作时灯丝的电阻是______Ω,电流表的电

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问题:

“2.5V,0.2A”的小灯泡在正常工作时灯丝的电阻是______Ω,电流表的电阻一般为零点几欧姆,电压表的电阻一般为几十千欧,如图所示的甲、乙电路,在本实验中最好采用______电路进行测量.

考点:实验:伏安法测电阻
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患者女性,13岁。自幼发育差。突发头痛、呕吐1周,查体:体温39℃,神清,颈强直,右侧肢体肌力4级,肌张力高,心前区可闻杂音。初步考虑诊断为

A.脑膜炎

B.偏头痛

C.脑肿瘤

D.脑脓肿

E.脑出血

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每年6月份,一般发生的现象是  [ ]

A.长江中下游地区为梅雨季节

B.长江中下游地区出现伏旱

C.锋面雨带北移到华北地区

D.南方沿海地区开始进入雨季

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肾小球疾病发病机制是()

A.免疫复合物介导型

B.炎性介质介导型

C.感染性炎性病变

D.非免疫非感染性病变

E.免疫介导型炎症病变

题型:问答题

关于免疫耐受和自身免疫性疾病,叙述正确的是()

A.自身免疫的发生是由于自身耐受的终止或破坏

B.淋巴细胞逃避克隆清除形成自身耐受

C.淋巴细胞经克隆清除产生自身免疫

D.维持导致自身耐受破坏的因素,有利于自身免疫性疾病的防治

E.自身免疫的发生可能是病毒感染引起

题型:问答题

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 teaching of reading will be successful if ______.

A. teachers can make their teaching activities observable
B. teachers can teach their students how to read
C. teachers can improve conditions at school for the students
D. teachers can enable students to develop their own way of reading

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