问题 多项选择题

患儿女,11岁。牙龈出血伴头晕乏力1个月,发热、咽痛2天入院。查体:T 38.9℃,颈部、腋窝及腹股沟淋巴结明显肿大,胸骨压痛,肝肋下2cm、脾肋下4cm。血常规检查:Hb 48g/L,WBC 29×109/L,PLT 76×109/L,外周血有无法分类的细胞。

急淋骨髓细胞化学染色,下列错误的是

A.POX染色阳性

B.SB染色阳性

C.α-NAE染色阴性

D.PAS染色阳性

E.NAP积分往往减低ACP染色:T细胞阳性,B细胞阴性

答案

参考答案:A,B,E,F

解析: 过氧化物酶(POX)和苏丹黑(SB)染色主要用于鉴别髓系与淋巴白血病:急粒、急单是阳性,急淋为阴性;α-醋酸萘酚酯酶(α-NAE)染色主要用于急单的诊断,急淋为阴性;急淋NAP积分往往增高;糖原(PAS)染色阳性;酸性磷酸酶(ACP)染色:T细胞阳性,B细胞阴性。

阅读理解

C

So long as teachers fail to distinguish between teaching and learning, they will continue to undertake everything to do for children that 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 devise the most efficient system for teaching themselves to read. Teaching is also a public activity. It can be seen and observed.

Learning to read, however, involves all that each individual does to make sense of 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 quest (探索) for knowledge? Smith has one principal 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 appropriately, then much of the pressure and feeling of failure for both is eliminated. Learning to read is made easier when teachers create an environment where children are given the opportunity to solve the problem of learning to read by reading.

小题1:The problem with the reading course as mentioned in the first paragraph is that

________.

A.it is one of the most difficult school courses

B.students spend endless hours in reading

C.reading tasks are assigned with little guidance

D.too much time is spent in teaching about reading小题2:The teaching of reading will be successful if ________.

A.teachers can improve conditions at school for the students

B.teachers can enable students to develop their own way of reading

C.teachers can devise the most efficient system for reading

D.teachers can make their teaching activities observable小题3:The underlined word “scrutiny” most probably means “________”.

A.inquiry

B.observation

C.control

D.suspect小题4:According to the passage, learning to read will no longer be a difficult task when

________.

A.children become highly motivated

B.teacher and learner roles are interchangeable

C.teaching helps children in the search for knowledge

D.reading enriches children’s experience小题5: The main idea of the passage is that ________.

A.teachers should do nothing in helping students learn to read

B.teachers should encourage students to read as widely as possible

C.reading ability is something acquired rather than taught

D.reading is more complicated than generally believed

问答题 简答题