單項選擇題

One of the serious weaknesses in American economy in the 1920s was（）

A.uncontrolled speculation in the stock market
B.tariff protection
C.huge profits of big businesses
D.too much control over the banking system

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單項選擇題

Sacco and Vanzetti were sentenced to death and executed because（）

A.of their radical political views
B.they were guilty of killing two people
C.they were members of KKK
D.they stole$16,000

單項選擇題

typically represented the world pattern between the two world wars（）

A.The Versailles Treaty System
B.The Versailles Treaty System and the Washington Treaty System
C.The collapse of the German,Austro-Hungary and the Ottoman colonial systems
D.Both B and C