题目内容
It is recommended by the representatives that traditional cultures _____
| A．should preserve | B．have been preserved |
| C．be preserved | D．must be preserved |
C
解析试题分析：考查虚拟语气：句意：代表推荐传统文化应该保留。这是it做形式主语的句子，that引导的是真正的主语从句，主句中的谓语是recommend。主语从句中的谓语用虚拟语气，should do，should可以省略，而且传统文化是被保留，选C。
考点：考查虚拟语气
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