for  i=1 to 50
	insert into student(姓名,班級,高數,計算機,力學);
				values("n"+ alltrim(str(i)),"cn04",int(rand()*100),int(rand()*100),int(rand()*100))
next
for i=1 to 50
		update student set 英語=int(rand()*100);
				where 英語=0
next