问题 单项选择题 A1型题

属于健康观内容的项目是()

A.预防为主

B.三级预防

C.加强社区行动

D.二级预防

E.人人享有卫生保健

答案

参考答案:B

解析:世界卫生组织在1984年对健康概念提出的定义“健康是身体、心理和社会适应的完好状态,而不仅是没有疾病和虚弱”,此为积极的健康观。一个人从健康、疾病、健康,很多情况下是没有截然界限的。人的健康问题的出现,是一个从接触健康危险因素、机体内病理变化从小到大,最后导致临床疾病发生和发展的过程。根据疾病发生发展的过程以及健康决定因素的特点,把预防策略按等级分类,成为三级预防策略。

实验题

某学习小组对在实验中吸收过二氧化碳气体的碱石灰成分进行了研究.

【查阅资料】

①碱石灰是CaO与NaOH 的固体混合物,通常用于吸收二氧化碳及干燥气体.

②碱性的Na2CO3溶液可以与中性的CaCl2溶液发生复分解反应.

【提出猜想】

该碱石灰的主要成分可能含有      、Ca(OH)2、CaCO3、NaOH和      

【设计方案、收集证据】

(1)甲同学在烧杯中放入少量的碱石灰样品,加入足量蒸馏水充分搅拌,静置有白色沉淀,甲同学认为样品中一定含有CaCO3,乙同学认为他的结论不准确,原因是:                    (填化学方程式).

(2)乙同学进一步设计实验并进行验证,过程如下:

实验操作实验现象实验结论
①从甲同学的烧杯中取少量上层清液于试管中,向其中滴加足量    溶液. 

有白色沉淀生成

生成白色沉淀的化学方程式为:

                   

②过滤,向滤液中滴加无色酚酞试液.无明显现象通过实验及分析,样品中不含有:

                      

【解释与评价】

(1)乙同学进一步设计了下列实验装置,通过称量B装置的质量变化来确定样品的成分及质量(气密性良好,每步均完全反应,操作无误).

多次实验发现测定结果有时偏大有时偏小偏差,试分析其主要原因:                                                                                  。

(2)在老师的指导下乙同学完善了实验装置,并重新进行了实验,步骤如下:

①检查装置气密性,将5.06g干燥的样品放入锥形瓶中;

②打开活塞b,从导管a处缓缓鼓入一定量的空气,关闭活塞b;

③称量盛有氢氧化钠浓溶液的D瓶质量;

④向锥形瓶中逐滴加入稀硫酸至不再产生气泡;

⑤打开活塞b,从导管a处缓缓鼓入一定量的空气;

⑥称量D瓶质量,增重2.2g.

通过分析及计算可知:5.06g样品中各成分及质量                               . 

阅读理解

阅读理解。

     A Chinese couple tried to name their baby "@", saying the character best represents their love for the child,

according to an official trying to whip the national language into shape. The unusual name stands out especially

in Mandarin (普通话), which has no alphabet and instead uses tens of thousands of multi-stroke (多笔画的)

characters to represent words. "The whole world uses it to write emails, and translated into Chinese it means

'love him'", the father explained, according to the deputy chief of the State Language Commission Li Yuming.

     While the @ symbol is familiar to Chinese email users, they often use the English word "at" to sound it out.

With a drawn-out "t", this sounds something like "ai ta", or "love him", to Mandarin speakers. Li says the name

is an extreme example of people's increasingly adventurous approach to Mandarin, as commercialization and the

Internet break down conventions (习俗).

     Another couple tried to give their child a name that in English sounds like "King Osrina".

     Li did not say if officials accepted the "@"name. But earlier this year the government announced a ban on

names using Arabic numerals and foreign languages. Sixty million Chinese face the problem that their names

use ancient characters so uncommon that computers cannot recognize them and even fluent speakers are left

scratching their heads, said Li, according to a transcript on the government website. One of them is the former

Premier Zhu Rongji, whose name has a rare "rong" character that gives newspaper editors headaches.

1. Why did the Chinese couple try to name their baby"@"? [ ]

A. Because they wanted their baby to have a special name.

B. Because they wanted their baby to haw an international name.

C. Because the @ symbol is familiar to email users all over the world.

D. Because die @symbol sounds something like "ai ta", which means "love him" in Chinese.

2. It can be inferred that _____. [ ]

A. Li Yuming is in favor of the baby's name

B. many Chinese people use Arabic numerals in their names

C. a majority of the Chinese people are having longer names

D. there is little possibility for the "@" name to be officially accepted

3. The underlined part in the passage probably means "_____". [ ]

A. even native speakers find it hard to accept these strange names

B. even native speakers can't find these characters in their computers

C. even those who are expert at Chinese can't recognize these characters

D. even those who are expert at Chinese find it hard to accept these names