（58-10）÷6，
=48÷6，
=8；
所以()58是这个数列的第9项，它的分子就是10．
即这个分数是1058．
故答案为：10．
阅读下面短文，从方框里的七个选项中，选择五个还原到文章中，使文章意思通顺，结构完整。
Do you have any friends? You may say “yes”.小题1:__________Boys think their friends must be boys and girls must have girl friends.小题2:_________.
Your classmates can be your friends. 小题3:_________ For example, you like playing sports, and your classmate also likes playing sports. Then can be friends.
Your teachers can be your friends. Teachers can give you help in your studies.小题4:___________.
Your parents can be your friends. They can play with you. 小题5:__________. They love you and give you all they have.
抗体效价的鉴定常采用以下何种方法（）
A.单向免疫扩散
B.双向免疫扩散
C.免疫电泳
D.亲和层析
E.免疫吸附法
