单项选择题
A.coal and iron ore B.silver and gold C.copper and aluminum D.lead and zinc
Industrial output has grown by an average of（）annually ...
单项选择题Industrial output has grown by an average of（）annually since tariff barriers were eliminated in 1977.
A.3% B.5% C.8% D.10%
Sine the 1960s,（）has become the mainstay of the Irish e...
单项选择题Sine the 1960s,（）has become the mainstay of the Irish economy.
A.manufacturing B.mining C.energy D.animal husbandry
In Ireland the agricultural enterprise producing the mo...
单项选择题In Ireland the agricultural enterprise producing the most income is（）.
A.forestry B.vegetable growing C.sugar refining D.animal husbandry
