在演讲中添加幽默元素，能够增强与观众的亲和力，减少紧张气氛，令观众精力集中，增强演讲的效果和持久力，使演讲被观众记得更牢。

Including humor in a speech improves audience rapport, reduces tension, keeps the audience alert and focused, improves impact and retention, and makes the speech more memorable.

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第四部分，增强新时期高校德育亲和力的思考。

Thinking of strengthening the new period university's moral affinity.

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结论抗体抗原亲和力随免疫次数的增加趋向饱和，BSA的线性表位为优势表位，随免疫次数的增加比重逐渐增强。

Conclusion With the increase of the immunization times, the affinity of antibody come to mature and the proportion of dominant linear epitopes of BSA became higher.

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