Which statement is NOT true about Ireland?

Which statement is NOT true about Ireland?
A、Ireland is divided into two political units.
B、Northern Ireland is part of the United Kingdom.
C、The Republic of Ireland is an independent country.
D、Ireland is called the Emerald Isle because of its rich deposit of emeralds.
【正确答案】：D
【题目解析】：爱尔兰被称为是”绿宝石岛“是因为它有许多绿色乡村，而不是因为绿宝石的丰富矿床。