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【多选题】环境问题经历了哪几个阶段（）？A. 环境问题发展萌芽阶段 B.环境问题恶化阶段 C.第一次环境问题高潮阶段 D. 第二次环境问题高潮阶段
A.
A
B.
B
C.
C
D.
D
【单选题】Friction between America’s military and its civilian overseers is nothing new. America’s 220-year experiment in civilian control of the military is a recipe for friction. The nation’s history has seen...
A.
Roosevelt was better prepared to be a wartime president than Lincoln
B.
in the Second World War, the relationship between the White House and the generals was intense
C.
both Lincoln and Roosevelt were good wartime presidents, although their actual way of dealing things may be different
D.
George Washington was actually the best president