单项选择题
A.more theoretical than practical. B.to produce sturdy, well-designed buildings. C.more practical than theoretical. D.to produce attractive, interesting buildings.
A.focus on one method only. B.explore some other alternatives. C.improve one of the four methods. D.integrate all of the four methods.
A.its changed policy towards America. B.recent international pressure. C.its desire to have the US trade embargo lifted. D.the impending visit by a senior US military officer.