现有三种常见治疗胃病药品的标签：INDICALM 消化药片每片含250mg 碳_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

现有三种常见治疗胃病药品的标签：

INDICALM

消化药片

每片含250mg

碳酸钙

Stamachease

减缓胃痛

每片含250mg

氢氧化镁

Fast digestion

帮助消化

每片含250mg

氧化镁

①

②

③

药品中所含的物质均能中和胃里过量的盐酸，下列关于三种药片中和胃酸的能力比较，正确的是（　　）

A．①=②=③

B．①＞②＞③

C．③＞②＞①

D．②＞③＞①

答案

假如要中和胃酸中HCl质量为36.5g，那么所需胃药质量越大，该种药品中和胃酸的能力解越弱．

各反应物之间的定量反应关系为

CaCO₃～2HCl Mg（OH）₂～2HCl Mg0～2HCl，找出各物质质量比，

100 73 58 73 40 73

通过分析看以看出：反应73克盐酸，分别消耗三种药品的质量依此为100克、58克、40克

所以三种药品中和胃酸的能力氧化镁最强、其次氢氧化镁、最弱的是碳酸钙．

故选C

听力题

阅读下面短文，根据以下提示（1）括号内汉语提示；（2）该词首字母提示；（3）上下文语境提示，在每个空格内填入一个适当的英语单词，使短文通顺，所填单词要求拼写正确，形式符合英语表达习惯。（10分）

It is important for us to have a good mood in our daily life.

If you own a good mood, you will find everything around is ________(精彩) 76 ________in the world. M______ importantly, you will have an optimistic effect77 ______________ people about you. Certainly, we will live a harmonious and happy78 ________life. It is also good for your own h________. However, sometimes when you79 ________meet some ________(困难), when you quarrel with some others or when you80 ________________(失败) in doing something, you may have a terrible mood. If so, you81 ________should get _______of such a bad mood as soon as possible.82 ________ ______ is known to all, every coin has its two sides. So you should 83 ________think more about the b________ side. We are sure that everything will be all84 ________right with time p________ by. Remember—only you can make yourself feel85 ________happy.

I hope that everyone has an excellent mood every day!

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