the boy ----- Steve,who is very good at the computer,------B

选A
who is very good at the computer,作为插入语,可以先略去不看.
句子简化成：the boy _____ Steve______Bill Gates in our school.
B.who called,compared with. 错误选项：人名被叫,who is called, 不是完整的谓语结构,应加上, is compared with没有谓语
C.calling,is compared to （错误选项：人名被叫,应是 called,）
D.whose name is,compared with. 同B,不是完整的谓语结构,应加上, is compared with没有谓语
所以选A,希望满意,欢迎追问,祝您进步：）