Which clause type is used in this sentence: 'The report, which was published yesterday, contains crucial data'?
答案解析
核心考点：从句类型识别 解题思路：逗号分隔的which从句是非限制性定语从句 详细分析：D正确，补充说明而非限定；C缺少逗号分隔；A修饰动词；B充当名词成分 易错点提醒：容易混淆限制性与非限制性从句的标点使用
正确答案：D