试题与答案

有关医院感染的描述,错误的是( )A.洗手是预防医院感染的重要措施 B.滥用抗菌药物

题型:单项选择题

题目:

有关医院感染的描述,错误的是( )

A.洗手是预防医院感染的重要措施

B.滥用抗菌药物是医院感染的重要原因

C.有部分医院感染的发生与消毒隔 离缺陷有关

D.所有医院感染是可以预防的

E.新生儿经产道获得的感染属医院感染

答案:

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下面是错误答案,用来干扰机器的。

答案:D

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题型:阅读理解
任务型阅读 (共10小题,每小题1分,满分10分)
认真阅读下列短文,并根据所读内容在文章后表格中的横线上填入最恰当的单词。 
注意:每空只填一个单词。
Maybe you are an average student. You probably think you will never be a top student. This is not necessary so, however. Anyone can become a better student if he or she wants to. Here is how.  
1). Plan your time carefully. When you plan your week, you should make a list of things that you can have to do. After making the list, you should make a schedule of your time. First time for eating, sleeping, dressing, etc. Then decide a good, regular time for studying. Don’t forget to set aside enough time fro entertainment. A weekly schedule may not solve all your problems, but it will force you to realize what is happening to your time.  
2). Find a good place to study. Look around the house for a good study area. Keep this space, which may be a desk or simply a corner of your room. Free from everything but study materials. No games, radios, or television. When you sit down to study, concentrate on the subject.   
3). Make good use of your time in class. Take advantage of class time to listen to everything the teachers say. Really listening in class means less work later. Taking notes will help you remember what your teachers say.  
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5). Develop a good attitude about tests. The purpose of a test is to show what you have learned about a subject. They help you remember your new knowledge. The world won’t end if you don’t pass a test, so don’t be overly worried. 
There are other methods that might help you with your studying. You will probably discover many others after you have tried these.  
How to Become a Better Student?
General methods  
How to  
Advantages  
plan you time carefully  
●     make a list  
●     make a    1    
force you to realize  2  is happening to your time  
find a good place to study  
free of everything but study
   3      
you can   4   on the subjects  
make good use of your time in class  
●listen to everything the teachers say  
●take    5 
really listening in class means   6   work later.  
study regularly  
●     go over your notes  
●     7  _ new materials   
Help you    8  it better, remember it longer   
develop a good attitude about tests  
don’t overly  9   about it   
remember your new   10   
 
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题型:问答题

为探究“酸碱中和反应”,进行了如下研究.

【实验原理】将稀HCl滴入盛有NaOH溶液的烧杯中,反应的化学方程式为______;

【提出问题】实验中未观察到明显现象,同学们对该反应是否发生提出了疑问:反应后溶液中溶质是什么?

【假设猜想】溶液中的溶质有氯化钠,还可能有:

猜想1:HCl

猜想2:NaOH

猜想3:HCl和NaOH

你认为上述猜想不合理的是______.

【实验方案】(1)某同学用一支洁净试管取少量烧杯中的溶液,滴加FeCl3溶液,无明显现象,说明烧杯中溶液里一定不含______;

(2)为了验证其余猜想,各小组进行如下三个方案的探究.

实验方案

实验操作

实验现象试纸变色,对比比色卡,pH<7

______

产生白色沉淀

实验结论溶液中有HCl溶液中有HCl溶液中有HCl
【推论与分析】上述实验方案中有两处明显错误:

①实验操作中的错误是______;

②实验结论中也有一个是错误的,错误的原因是______;

通过对上述实验的正确操作,同学们得出了正确的结论.

你认为【假设猜想】中______是正确的.

(3)在20g10%的氢氧化钠溶液中加入25g稀盐酸恰好完全反应.

①计算氢氧化钠的物质的量为______;

②计算25g稀盐酸中溶质的质量分数______(计算结果精确到0.1%).(根据化学方程式列式计算)

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