单项选择题
The population decreased from the 1840s until about 1970,largely because of（）.
A.a low birth rate B.a high death rate C.a low employment rate D.a high emigration rate
单项选择题 Ireland is unique among European countries for（）.
单项选择题 Ireland has the following demographic features except（）.
单项选择题 Which of the following is not true of Ireland.s climate?（）
