Which of the following words is closest in meaning to 'moratorium' in the context of scientific research regulation?
答案解析
核心考点：近义词辨析 解题思路：'moratorium'特指临时中止而非永久禁止 选项分析：B正确（暂停），A表示永久禁止，C强调终结，D指延长期限 易错点：可能混淆临时中止与永久禁止的概念
正确答案：B