如果视野将矩阵完全填充，且像素不是正方形，则像素的宽度等于（）。 A.视野的宽度除以

   If you ask a teacher in China what makes a good student, he or she would probably tell you that a
good student is someone who gets high marks in exams. It is true that most teachers share this opinion.
1_____She says that as an educator,she feels sorry about what her students have to do every day. She
hates to see her students study day and night for the endless exams.These teenagers have no time to
relax or hang around with their friends. rrhey shouldn't be turned into book-worms(书呆子).2______  
Shen Hong thinks a good student should be like this:    
    A good student is honest and kind to others. 3______If he does something wrong, he says sorry
immediately. A-part from this,a good student is always ready to help hisfriends when they are in trouble.      
    A good student is one who always tries his best instudies. He makes full use of his time to learn both
in andout of class. Hard work comes first no matter how cleverhe is. 4 ______   He often plays ball
games or goes campingwith his friends. In a word, he develops in an all-round way.