农业科技成果转化的社会效益是什么？

设x＞0，P=2^x+2^-x，Q=（sinx+cosx）²，则（　　）

A．P≥Q

B．P≤Q

C．P＞Q

D．P＜Q

从2004年5月1日开始，新的交通法正式实施，司机和乘客在行驶过程中必须系好安全带，这是为了防止在紧急刹车时，人由于______而造成意外的伤害．安全带通常较宽，其目的是______．同时，高级轿车上还装有安全气囊，内部贮有硝酸铵（NH₄N0₃）．当汽车高速行驶中受到猛烈撞击时，硝酸铵迅速分解，产生大量一氧化二氮气体和另一种氧化物，充满气袋，填补在司机与挡风玻璃、方向盘之间（如图所示），防止司机受伤．请写出硝酸铵受撞击后发生分解反应的化学方程式：______．

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

患者60岁，男，体检胸片发现异常，CT检查如图，最可能的诊断是（）

A．肺癌

B．错构瘤

C．肺结核

D．韦格肉芽肿

E．支气管腺瘤

关于非处方药的特点

不需要经常调整剂量是( )

A．疗效确切的要求
B．质量稳定的要求
C．使用安全的要求
D．应用方便的要求
E．价格合理的要求