Awk help! Help !! Help !!!

Awk help! Help !! Help !!! -- Linux general technology-Linux technology and application information. for details, refer to the following section. Thank you !!! Please help me write an awk script, that is, to pick out and print the rows in the two data files to the specified file. For example, the students in the two classes took an exam. the number of subjects for the exam was the same (Chinese, mathematics, English, and physics), and the scores of some specific students were selected. The requirement is that the scores of these students in the same subject are only 2 points different (do not bother ). Let me give you an example: the score of Class A students is represented by file A, and the score of class B is represented by file B,
File A is:
Physical name of Chinese, mathematics, and English
95 94 93 92 Zhang San
85 84 83 82 sheets 4
75 74 73 72 Zhang Wu
65 64 63 62 sheets 6
File B is:
99 90 97 98 Li Si
87 82 85 80 Li Wu
80 70 63 82 Li Liu
70 68 68 72 Li Qi
It is a little troublesome to implement this algorithm. we need to compare the records of each domain in two files cyclically: the numbers in each column in the first row in the first file and the corresponding columns in all rows in the second file, the second and third columns of the first file .... Compare the rows of the second file in sequence with those of the second file. I am new to awk and feel that the header is too big. thank you for your help !!! I am willing to pay a certain amount, QQ: 114669870, mail: wangjt3235@yahoo.com.cn.