小红在池塘边观察水中月亮的视线与水面的夹角是30°，如图，此光的反射现象中入射角的度数是____．

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    Maybe you are an average student. ____ This is not necessarily so, however. Anyone can become a better student if he or she wants to. Here's how.

    Plan your time carefully. When planning your work, 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. ____ A weekly schedule may not solve all your problems, but it will force you to realize what is happening to your time.

    Make good use of your time in class. ____ Listening carefully in class means less work later. Taking notes will help you remember what the teacher says.

    Study regularly. When you get home from school, go over your notes; look at the important points that your teacher is going to discuss the next day, read that material. ____ If you do these things regularly, the material will become more meaningful, and you'll remember it longer.

    Develop a good attitude towards 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 over worried.

    ____ You will probably discover them after you have tried these.