问题 单项选择题

在单缝夫琅禾费衍射实验中,若单缝两端处的光线到达屏幕上某点的光程差为δ=2.5λ(λ为入射单色光的波长),则此衍射方向上的波阵面可划分的半波带数量和屏上该点的衍射条纹情况是( )。

A.4个半波带,明纹
B.4个半波带,暗纹
C.5个半波带,明纹
D.5个半波带,暗纹

答案

参考答案:C

解析: δ=2.5λ=(2×2+1)λ/2单缝衍射明纹条件。

阅读理解

Money and Happiness

A Guide to Living a Good Life

Author: Laura Rowley

Publisher: Wiley (March 1, 2007)

Laura Rowley makes us all understand the connection between money and happiness in our own lives so that we can spend our time and efforts wisely. She offers an insight(领悟)so that every reader can make smarter decisions and live a happier life.

Happiness

The Science Behind Your Smile

Author: Daniel Nettle

Publisher: Oxford University Press (July 1,2007)

It is the first book mainly about what happiness is and how happiness works. Nettle examines whether people are basically happy, whether success can make us happy, why some people are happier than others, etc.

The Happiness Makeover

How to Teach Yourself to Be Happy and Enjoy Every Day

Author: M. J. Ryan

Publisher: Broadway (May 10, 2007)

Ryan’s own desire to be happier first led her to study about happiness from brain science, psychology(心理学), and the wisdom traditions of the world. The happiness Makeover draws on wide - ranging knowledge and presents some suggestions that will help you a lot:

● Clear away worry, fear, envy, and grudges.

● Learn to think about yourself confidently.

● Find daily ways to truly enjoy the moments of your life.

Hormones(荷尔蒙), Health, and Happiness

Author: Steven F. Hotze

Publisher: Forrest Publishing (April, 2007)

Dr. Steven Hotze is leading a wellness revolution that advances a new model of healthcare.

In Hormones, Health, and Happiness, Dr. Hotze deals with the basic causes of poor health. You are shown how to reach and maintain the most favorable cell,tissue,and organ functioning.It can help you enjoy a better quality of life.

小题1:What does the underlined“grudges”probably mean?

A.anger

B.surprise

C.favour

D.preference小题2:If you want to know more about whether happiness has something to do with Success,you’d better read_____________.

A.Money and Happiness

B.Happiness.

C.The Happiness Makeover

D.Hormones,Health,and Happiness小题3:Whose book will possibly help readers get a new kind of health and wellness model?

A.Laura Rowley’s

B.M.J.Ryan’s

C.Daniel Nettle’s

D.Steven F.Hotze’s.

单项选择题