问题 填空题

______和阿伏伽德罗等科学家的研究,得出了一个重要结论:物质是由______构成的.这些观点是认识和分析化学现象及其本质的基础.

答案

近代,道尔顿提出了近代原子学说,阿佛加德罗提出了分子的概念并创立了分子学说,他们得出了一个重要结论:物质是由原子和分子构成的,分子的破裂和原子的重组是化学变化的基础,这些观点是认识和分析化学现象及其本质的基础,奠定了近代化学的基础.

故答案为:道尔顿;原子和分子.

单项选择题
阅读理解

阅读理解

     When we think of leadership, we often think of strength and power.But what are these really, and

how do they operate?

     Leadership today is not about forcing others to do things.Even if this is possible, it is shortterm, and

tends to produce unexpected and unwanted results.If you order someone to do something against their

will, they may do it because they feel they have to, but the anger they feel will do more harm in the long

term.They will also experience fear.

     Fear causes the thinking brain to shut down, making the person unable to function at his or her best.

If they connect you with this emotion of fear, they will become less functional around you, and you will

have succeeded in not only shooting yourself in the foot, but possibly making a very good employee or

partner unable to perform effectively.Fear does no good to leadership.

     The way we influence people in a lasting way is by our own character, and our understanding and use

of emotion.We can order someone to do something, which may be part of the work day; or we can

employ them at the emotional level, so they will become fully devoted to the projects and provide some

of their own motivation.Today's work place is all about relationships.

     Anyone works harder in a positive environment in which they're recognized and valued as a human

being as well as a worker.Everyone produces just a bit more for someone they like.Leaders understand

the way things work.They know the pay check is not the single most important factor in the work life of

most people.

     The true strength of leadership is an inner strength that comes from the confidence of emotional

intelligence-knowing your own emotions, and how to handle them, and those of others.Developing your

emotional intelligence is the single best thing you can do if you want to develop your relationship with

people around you, which is the key to the leadership skills.

1.  The writer thinks that it is not________for us to connect leadership with strength and power.

A.  possible 

B.  necessary

C.  easy  

D.  effective

2.  People may NOT be working hard when________.

A.  they're regarded as human beings

B.  they like their leaders

C.  money is taken as the most important

D.  leaders understand the way things work

3.  From the passage, we can conclude that________is the key to making a good leader.

A.  developing one's emotional intelligence

B.  in fluencing others in one's own way

C.  producing some unexpected results

D.  having confidence in one's ability

4.  This passage is most helpful to those who________.

A.  have strength and power

B.  are going to make a speech

C.  would like to be leaders

D.  are to be excellent employees