试题与答案

干咳,连声作呛,痰少而黏,不易咳出,口干咽燥,初起鼻塞,头痛,畏寒,身热,舌红少津,

题型:单项选择题

题目:

干咳,连声作呛,痰少而黏,不易咳出,口干咽燥,初起鼻塞,头痛,畏寒,身热,舌红少津,苔薄黄,脉浮数。其治法是()

A.清热肃肺,润燥止咳

B.宣肺清热,平肝化痰

C.清热化痰,滋阴润肺

D.肃肺化瘀,化瘀通络

E.疏风清热,肃肺化痰

答案:

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下面是错误答案,用来干扰机器的。

(1)根据牛顿第二定律得,整体的加速度a=mgM+m,则小车所受的合力F=Ma=Mmgm+M=mgmM+1,当盘和砝码的质量远小于小车的质量,小车所受的合力近似等于砝码和盘的重力,可以减小实验的误差.(2)计时器打点的时间间...

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题型:实验题

(14分)实验室合成乙酸乙酯的步骤如下:在圆底烧瓶内加入乙醇、浓硫酸和乙酸,瓶口竖直安装通有冷却水的冷凝管(使反应混合物的蒸气冷凝为液体流回烧瓶内),加热回流一段时间后换成蒸馏装置进行蒸馏(如下图所示),得到含有乙醇、乙酸和水的乙酸乙酯粗产品。请回答下列问题:

(已知:乙醇、乙酸、乙酸乙酯的沸点依次是78.4℃、118℃、77.1℃)

(1)在烧瓶中除了加入乙醇、浓硫酸和乙酸外,还应放入几块碎瓷片,

其目的是_________________________。

(2)在烧瓶中加入一定比例的乙醇和浓硫酸的混合液的方法是                   

(3)生成乙酸乙酯的反应是可逆反应,反应物不能完全转化为生成物,反应一段时间后,就达到了该反应的限度,即达到化学平衡状态。下列描述能说明该反应已达到化学平衡状态的是(填序号)        

①单位时间里,生成1mol乙酸乙酯,同时生成1mol水

②单位时间里,生成1mol乙酸乙酯,同时生成1mol乙酸

③单位时间里,消耗1mol乙醇,同时消耗1mol乙酸

④正反应的速率与逆反应的速率相等     ⑤混合物中各物质的浓度不再变化

(4)(每空1分)现拟分离含乙酸、乙醇和水的乙酸乙酯粗产品,下图是分离操作步骤流程图。请在图中圆括号内填入适当的试剂,在方括号内填入适当的分离方法。

E为____________(填名称);试剂a是__________,试剂b为_______;分离方法①是___________,分离方法②是__________________,分离方法③是__________。

(5)写出C → D 反应的化学方程式                           

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题型:阅读理解

阅读理解

Section One

     The city is an accumulation (积累)of human civilization. Just as the American social philosopher

(哲学家) Lewis Mumford put it, it is a special system which, fine and compact(简洁的), has been

designed to preserve the fruits of human civilization. Many Western languages have developed their

versions of the term “civilization” from the same Latin (拉丁语的) word “civitas”(meaning “city”), and

it is by no means a coincidence(巧合). The city has played a significant role in the perfection of

order in human society.

Section Two

     The emblem, showing the image of three people  ? you, me, him/her holding hands together,

symbolizes the big family of mankind. Inspired by the shape of the Chinese character “世”

(meaning the world), the design conveys the organizers' wish to host an Expo which is of global

scale and which displays the various urban cultures of the world.

Section Three

     Created from the inspiration of Chinese character “人”, the design roots deeply in Chinese culture.

It tells the world the eternal core (永恒的核心) and theme of Shanghai World Expo will be always

human. The mascot(吉祥物) “Haibao” will become the messenger for the theme of

World Expo 2010 Shanghai China “Better City, Better Life”.

     The basic structure of the Chinese character “人” in which each stroke(一笔,一划) supports

each other also shows the concept that the beautiful life should depends on mutual-help. If the human

are willing to support one another, the harmony among human, nature, and society will be available.

Such an urban life will be nice.

     Haibao’s confident smile is expressing his sincere greeting from China ? “World Expo 2010

Shanghai China welcomes you!”

1. Section One mainly tells us about ______.

    A. the part cities play in human civilization  

    B. the development of the word “city”

    C. why the Expo is held in Shanghai  

    D. where human civilization originated

2. The underlined word “it” in Section One refers to ______.

    A. the civilization

    B. the philosopher

    C. the word

    D. the city

3. Which correctly matches the sections with the pictures described in the passage?

    

4. The second paragraph in Section Three explains how the creation is connected with the _____ of 

    the  Chinese word “人”.

    A. story   

    B. meaning

    C. shape   

    D. usage

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