信息系统开发分为若干个阶段，其中建立信息系统总体结构的任务是在下列哪个阶段完成的A．

Maybe you are an average student. You probably think you will never be a top student. This is not necessary so, however. Anyone can become a better student if he or she wants to. Here’s how:
1. Plan your time carefully. When you plan your week, you should make a list of things that you have to do. After making this list, you should make a schedule of your time. First your time for eating, sleeping, dressing, etc. then decide a good, regular time for studying. Don’t forget to set aside enough time for entertainment. A weekly schedule may not solve all your problems, but it will force you to realize what is happening to your time.
2. Find a good place to study. Look around the house for a good study area. Keep this space, which may be a desk or simply a corner of your room, free of everything but study materials. No games, radios, or television! When you sit down to study, concentrate on the subject.
3. Make good use of your time in class. Take advantage of class time to listen to everything the teachers say. Really listening in class means less work later. Taking notes will help you remember what the teacher says.
4. Study regularly. When you get home from school, go over your notes. Review the important points that your teacher mentioned in class. If you know what your teacher is going to discuss the next day, read that material will become more meaningful, and you will remember it longer.
5. Develop a good attitude about tests. The purpose of a test is to show what you have learned about a subject. They help you remember your new knowledge. The world won’t end if you don’t pass a test, so don’t be overly worried.
There are other methods that might help you with your studying. You will probably discover many others after you have tried these.
How to become a better student

General method	How to	Advantage
Plan your time carefully	Make a list	Force you to realize小题1: ____ is happening to your time
	Make a 小题2:_____
Find a good place to study	Free of everything but study小题3: ______	You can 小题4:______on the subject
Make good use of your time in class	Listen to everything the teachers say	Really listening in class means 小题5:______ work later
	Taking 小题6:______
Study regularly	Go over your notes
	小题7:______ new material	Help you小题8:_____it better , remember it longer
Develop a good attitude about tests	Don’t be小题9:______ worried	Remember your new 小题10:_____