教师职业技能是教师必须掌握和运用的，从事教育和教学的基本（）。 A.技巧 B.方法

差别阈限和原来刺激强度的比例是一个常数。这就是韦伯定律，用公式表示就是△I/I=K。其中△I是( )。

A．原来的刺激强度

B．差别阈限

C．韦伯常数

D．韦伯分数

患者，男，60岁。有慢性支气管炎病史20年，肺心病5年。近1周感冒后咳嗽，吐黄痰，心悸气短加重。下列治疗原则最重要的是

A．止咳

B．祛痰

C．抗感染

D．强心

E．利尿

起重机运行机构在运行中出现歪斜、跑偏、滑道、磨损的主要原因是起重机桥架几精度超差较大。

男性，42岁，反复双下肢水肿7年，3天前出现咳嗽、发热，水肿加重，牙龈出血，呼吸困难不能平卧，查体：两肺底多量湿啰音，双下肢重度水肿，血压210/115mmHg，血肌酐 1500μmol/L，尿素氮39mmol/L，二氧化碳结合力14mmol/L，血红蛋白60g/L，尿常规蛋白(+++)。

最适宜的治疗措施是

A．应用速尿减轻水肿

B．静滴碳酸氢钠

C．血液透析治疗

D．降低血压

Mom was right！If you say thank you，for even the smallest gift or slightest show of kindness，you’ll feel happy.

Gratitude(感谢)，says Robert A．Emmons，a professor of psychology at the University of California，is an important element of happiness.In his recent book，Thanks！，Emmons uses the first major study on gratitude to prove mom’s point.In acknowledging and developing this much­ignored expression of thankfulness，he explains how people have benefited—even improved their health.

As one of the leading scholars of the positive psychology movement，he admits gratitude may be difficult to express.He advises you to begin by admitting that life is good and full of events and elements that make daily existence a wonder.Second，recognize that the source of life’s goodness is more than just you.That source may be your mom，a friend，partner，child，colleague at work or play，or any combination of these.

Gratitude is always other­directed，notes Emmons.You can be pleased or angry with yourself and feel guilty about doing something wrong，but you can never be grateful to or for yourself.

Expressing gratitude shouldn’t be a reaction；it should be a state of mind.To feel grateful when life is a breeze and you have more than you need is easy.To feel grateful in time of crisis—anger，hatred and bitterness—is easier.Also，too many people are aware of life’s blessings only after these are lost.The voices expressing gratitude from his studies of individuals are many.

It’s crisis and chaos—danger，disease，disability and death—that bring many individuals to realize just how dependent they are on others.Yet it’s the way each of us begins life and ends it.It’s too bad that so many people waste those decades in between labouring under the illusion(幻觉) they are self­sufficient，says Emmons.

To enable and embrace gratitude，Emmons encourages the readers of Thanks! to keep a gratitude diary.He even provides easy­to­follow directions on how to practise and develop gratitude.

I’m not a reader or advocate of self­help books，but I am thankful for the reference I found in a newspaper article to the research Emmons was conducting on gratitude involving organ donors and recipients(接受者)．The chance discovery led me to this book.

Mom implied that kindness seems to find its way back to the giver because life really is all about giving，receiving and repaying.So I’ll pay attention to her professional advice and say：Thank you，professor Emmons.

小题1:What is the text mainly discussed?

A．There are many ways of being thankful.

B．Gratitude is important to happiness.

C．Mom is great for her being thankful.

D．Being thankful will keep you fit.小题2:The author mentions Robert A．Emmons’book Thanks! in order to prove that ________.

A．Professor Emmons supports mom’s study on psychology

B．mom is as great a psychologist as Professor Emmons

C．Professor Emmons is a famous psychologist

D．mom is right about her viewpoint on gratitude

小题3:It will be easier for you to feel grateful when ______.

A．you live a comfortable life

B．you receive gifts on your birthday

C．you get help during your hard times

D．you are congratulated on your success小题4:What is the opinion of Professor Emmons?

A．It is enough to thank others orally.

B．Whether you are thankful is always up to you.

C．Remember to be thankful anytime and anywhere.

D．It is easier to be thankful for yourself than for others.