The amendments to the US Constitution must have the approval of _______ of the states before they enter into force.
A.Yalta
B.President Roosevelt
C.Jamestown
D.The Smith Act
E.the Bill of Rights
F.Black Thursday
G.slavery
H.President Wilson
I.two-thirds
J.stamp tax
K.Federalist Papers
L.three-fourths
【正确答案】：L
【题目解析】：【考点点击】本题主要考查美国宪法修正案。
【要点透析】美国宪法修正案在生效之前必须要获得美国四分之三的州的同意。P241
