题目内容
【题目】Whether we should officially accept the decision of marriage in the same sex is a highly (有争议的）topic in many countries.
【答案】controversial
【解析】考查形容词。句意：我们是否正式接受同性恋可以结婚的决定在许多国家是一个非常有争议的课题。controversial“有争议的”，此处为形容词作定语。故填controversial.
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