The American Constitution was finally adopted in 1789 by a narro

The American Constitution was finally adopted in 1789 by a narrow margin on the understanding that ______ after the Constitution came into force.
A、Washington would be president of the U.S.
B、the House of Representatives would be elected by each state
C、a Bill of Rights would be amended
D、each state would be equally represented in the Senate
【正确答案】：C
【题目解析】：本题考查美国宪法。美国宪法最终于1789年以微弱优势通过，但有一项共识，即在宪法生效后，将对人权法案进行修改。