单项选择题
The Hoover Administration（）to deal with the economic crisis.
A.took effective measures B.did not take any measure C.asked the private sector D.refused to take strong government action
单项选择题 The serious economic crisis in the late 1920s and 1930s first brought about by（）
单项选择题 One of the serious weaknesses in American economy in the 1920s was（）
单项选择题 Sacco and Vanzetti were sentenced to death and executed because（）
