信息技术标准化的研究范围主要包括（）。 A.基础研究 B.应用研究 C.超前性研究

压顶试验（椎间孔挤压试验）阳性的表现为：（）

A.患者出现头晕

B.患者出现头痛

C.患者出现眼窝胀痛，视物不清

D.患者出现恶心，水平眼震

E.患者出现颈痛及上肢放射痛

So far there _____ great changes in my hometown.   [ ]

A. are

B. are going to be

C. have been

D. will be

资源利用效率低，一个重要原因就是( )行业发展过快，工艺技术和装备落后。

A．低投入、低消耗

B．高投入、高消耗

C．低投入、高消耗

D．高投入、低消耗

阅读理解。

     So long as teachers fail to distinguish 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 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 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 leaning to read by reading.

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

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

3. The word "scrutiny" in Para.3 most probably means " ________"

A. inquiry

B. observation

C. control

D. suspicion

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

5. The main idea of the passage is that .______

A. teachers should do as little as possible 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

一次性使用无菌注射器其铅锌锡铁的总量应是

A．≤10μg/g
B．≤5μg/ml
C．≤1.0μg/ml
D．≤0.5μg/ml
E．≤0.1μg/ml