自实行改革开放政策以来,中国发生了巨大的变化。Since the Reform and Opening-up Policy was adopted,China

游客2024-02-03  25

问题 自实行改革开放政策以来,中国发生了巨大的变化。

选项

答案 Since the Reform and Opening-up Policy was adopted,China has seen great changes.

解析 从句中“自……以来”用since表达,从句谓语用一般过去时,此处用被动态was adopted。主句“发生了”表明谓语用现在完成时has seen。
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