It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any __________.

A．symptom

B．sense

C．sample

D．shadow

　　某中学研究性学习小组举办《红楼  梦》读书交流会。主题是“《红楼梦》诗词鉴赏”。请为主持人写一则开场白。要求：①紧扣主题；②表达得体，富有文采；③不写称呼语、问候语；④不超过  60字。

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