单项选择题
When did the Anglo-Saxons invade Ireland?（）
A.In 432. B.In 1170. C.In 1610. D.In 1641.
单项选择题 In Ireland today about（）of the population are Roman Catholics.
单项选择题 The population of Ireland is predominantly of（）origin.
单项选择题 The population decreased from the 1840s until about 1970,largely because of（）.
