试题题干
The American Constitution is the oldest written constitution in the world. It was drawn up in 1787 and went into effect in （ ）.
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正确答案：
试题解析
美国宪法是世界上最古老的成文宪法。 它于1787年制定，并于1789年生效。
The American Constitution is the oldest written constitution in the world. It was drawn up in 1787 and went into effect in （ ）.
美国宪法是世界上最古老的成文宪法。 它于1787年制定，并于1789年生效。