【英语】It was in Atlanta ______ nearly half the population were……

题目

【英语】It was in Atlanta ______ nearly half the population were……
It was in Atlanta ______ nearly half the population were black ______ one of the great leaders of the Civil Rights Movement,Dr.Martin Luther King,Jr.was born.
A.that；that
B.that；where
C.where；that
D.where；where
帮我详细讲解一下这题为什么选“C”不选“B”?这些从句什么的我都不太懂.

答案

这句话的主要句子是It was in Atlanta that Martin Luther King was born.显然,这是一个强调句.是在亚特兰大马丁路德金出生的.强调句的连接词是that.
在Atlanta之后接了一个定语从句,修饰Atlanta,那么,这个词组的意思就是：是在半数人口是黑人的亚特兰大.这个横线缺地点状语,因此要田where.
全句的意思是：是在半数人口均为黑人的亚特兰大,民权运动的最伟大***之一小马丁路德金博士诞生了.