单选题Overlord is a code name for（）AAmerican lend-lease assistance to the Soviet UnionBthe summit conference at TeheranCthe allied landing at Normandy,France in 1944Dthe North African campaign
单选题
Overlord is a code name for（）
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
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