A.an organized campaign with definite goals
B.a movement aiming at exposing the dark sides of society
C.not an organized campaign with efforts to improve people's living standard
D.a number of diverse efforts aiming at achieving political,social and economic reforms

A.the use of steam and electricity as chief energy,the development of lare corporation and the development of railway
B.the development of large corporation,urbanization and the employment in production of new technology
C.the appearance of airplane,the use of electricity on a large scale and urbanization
D.the rapid development of industry,railway and large cities

A.the allied landing at Normandy
B.the setting-up of a world organization,the United Nations,to manage peace and security after the war
C.coordinated efforts in war against Japan
D.None of the above

A.American lend-lease assistance to the Soviet Union
B.the summit conference at Teheran
C.the allied landing at Normandy,France in 1944
D.the North African campaign

A.the total defeat of Axis powers
B.the establishment of a postwar world order under American leadership
C.coordination of war efforts of the Soviet Union,Britain and the United States
D.Both A and B