患儿,男,3岁。患感冒已3天,声哑发热,昨夜开始哭闹时出现喉鸣及鼻翼翕动,吸气时天突

题型:单项选择题

问题:

患儿,男,3岁。患感冒已3天,声哑发热,昨夜开始哭闹时出现喉鸣及鼻翼翕动,吸气时天突、缺盆、肋间处凹陷。此时属于()

A.一度呼吸困难

B.二度呼吸困难

C.三度呼吸困难

D.四度呼吸困难

E.五度呼吸困难

考点:中医全科(医学高级)中医全科综合练习中医全科综合练习题库
题型:单项选择题
已知命题p:实数m满足方程
x2
m-3a
+
y2
m-4a
=1(a>0)表示双曲线;命题q:实数m满足方程
x2
m-1
+
y2
2-m
=1表示焦点在y轴上的椭圆,且q是p的必要不充分条件,求实数a的取值范围.
题型:单项选择题

户外架空管道的防雷要求有( )。

A.户外架空金属管道,应设防雷电波侵入建筑物的接地。其中输送易燃易爆气体或液体的管道在进出建筑物处,不同爆炸危险环境的边界、管道分支处及直线段管道50~80m处应设防静电接地,每处接地电阻不大于30Ω(氧气和乙炔气体管道为10Ω)
B.户外架空氢气管道应每隔20~25m设防雷电感应接地,每处接地电阻不大于10Ω
C.上述管道架空平行敷设,当两管间净距小于100mm时,每隔20~30m应用金属线跨接,净距小于100mm的交叉管道也应用金属线跨接
D.防雷电感应接地和防静电接地宜共用接地装置,接地电阻应符合两种接地中较小值的要求,并可与防雷及电气设备接地装置相连通

题型:单项选择题

We find that bright children are rarely held back by mixed-ability teaching. On the contrary, both their knowledge and experience are enriched. We feel that there are many disadvantages in streaming(把…按能力分班)pupils. It does not take into account the fact that children develop at different rates. It can have a bad effect on both the bright and the not-so-bright child. After all, it can be quite discouraging to be at the bottom of the top grade!

  Besides, it is rather unreal to grade people just according to their intellectual (智力的) abilities. This is only one aspect of their total personality. We are concerned to develop the abilities of all our pupils to the full, not just their academic ability. We also value personal qualities and social skills, and we find that mixed-ability teaching contributes to all these aspects of learning.

  In our classrooms, we work in various ways. The pupils often work in groups: this gives them the opportunity to learn to co-operate, to share, and to develop leadership skills. They also learn how to cope with personal problems as well as how to think, to make decisions, to analyze and evaluate, and to communicate effectively. The pupils learn from each other as well as from the teacher.

  Sometimes the pupils work in pairs; sometimes they work on individual tasks and assignments, and they can do this at their own speed. They also have some library, and we teach them the skills they need in order to do this effectively. And expect our pupils to do their best, not their least, and we give them every encouragement to attain this goal.

1. Group work provides pupils with the opportunity_________.

  A. to develop academic abilities                    B. to learn to teach.

  C. to do some experiments                           D. to learn to be capable organizers.

2. By "held back" in the first paragraph the author means _________.

  A. drawn to their studies                                  B. prevented from advancing

  C. made to remain in the same classes            D. forced to study in the lower classes

3. In the passage the author's attitude towards " mixed-ability teaching" is ________.

  A.questioning               B. approving         C. objective    D. critical

4. The author's purpose of writing this passage is to _________.

  A. offer advice on the proper use of the library

  B. emphasize the importance of appropriate formal classroom teaching

  C. argue for teaching bright and not -so-bright pupils in the same class

  D. recommend pair work and group-work for classroom activities

5. The author argues that a teacher's chief concern should be the development of the student's _____.

  A. total personality                                   B. intellectual ability

  C. learning ability and communicative skills        D. personal qualities and social skills

题型:单项选择题

简述避孕药的避孕原理。

题型:单项选择题

()是指土地所有者将土地租给土地使用者,土地承租人和出租人签订租赁契约所确定的租金。

A.经济地租 

B.商业地租 

C.理论地租 

D.垄断地租

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