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【简答题】
交叉营销的立足点不是放在挽留老客户上，而是放在争取新客户上。（ ）
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皮皮学刷刷变学霸
举一反三
【简答题】1) When did the United States become an industrial nation?
【简答题】When did the United States become an industrial nation?
【单选题】When did the United States Weather Bureau begin to use box kites?
A.
In 1752.
B.
In 1898.
C.
In 1903.
D.
In 1933.
【单选题】When did the United States become the strongest power in the western world?
A.
Before WWI
B.
During WWI
C.
Before WWII
D.
During WWII
【单选题】When did the United States have social security on a national level?
A.
1924
B.
1935
C.
1922
D.
1947
【单选题】When did the United States of America first become a nation?
A.
1786
B.
1976
C.
1776
D.
1881
E.
1781
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