阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
Register(注册) in person: 1782N. Winchester St. Chicag
Register by phone: Call 264-8833
Register by mail: Use form given
Basic Photography
This is an eight-hour course for beginners who want to learn how to use a 35mm camera. The teacher will cover such areas as kinds of films, light, and lenses(镜头). Bring your own 35mm camera to the class.
Course Charge: $ 150
Jan. 10，12， 17，19，Tues. &. Thurs. 6~8p. m.
Marianne Adams is a professional photographer whose photographs appear in many magazines.
Understanding Computers
This twelve-hour course is for people who don't know very much about computers, but who need to learn about them. You will learn what computers are，what they can and can't do，and . how to use them.
Course Charge: $ 75
Equipment Charge: $ 10
Jan.7，14, 21, 28, Sat.9~12 a. m.
Joseph Saimders is a professor of computer science at New Urban University. He has over twelve years of experience in the computer field. .
Stop Smoking
Do you want to stop smoking? Have you already tried to stop, but failed? Now it is the time to stop smoking using the latest methods. You can stop smoking，and this twelve- hour course will
help you do it.
Course Charge: $ 30
Jan.4, 11, 18, 25 Mon.4~7 p. m.
Dr. John Goode is a practicing psychologist(心 理学家) who has helped hundreds of people stop smoking.
Typing
This course on weekdays is for those who want to type as well as those who want to improve their typing. You are tested in the first class and practice at one of eight different skill levels. This
allows you to learn at your own speed. Each program lasts 20 hours. Bring your own paper.
Course Charge: $ 125
Materials Charge: $ 25
Two hours each evening for two weeks.
This course is taught by a number of business education teachers who have successfully taught typing courses before.
21. The shortest course is .
A. Basic Photography B. Understanding Computers .
C. Stop Smoking D. Typing
22. A course which can do something good for your health will cost
A. $10 B. $30 C. $50 D. $ 125
23. If you have free time only on weekends, which course will you take?
A. Basic Photography B. Understanding Computers
C. Stop Smoking D. Typing
