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　　在??(zai)講??(jiang)座??(zuo)中??(zhong)??，賀??(he)福??(fu)初??(chu)向?(xiang)大??(da)家??(jia)梳??(shu)理??(li)了?(le)2000多??(duo)年??(nian)以??(yi)來??(lai)“科??(ke)學??(xue)大??(da)發(fā)?(fa)現(xiàn)??(xian)時??(shi)代??(dai)”的??(de)特??(te)點??(dian)??，拓??(tuo)寬??(kuan)了??(le)學??(xue)生?(sheng)對??(dui)自??(zi)然??(ran)科??(ke)學??(xue)的??(de)認??(ren)知?(zhi)邊??(bian)界??(jie)??。??他??(ta)表??(biao)示??(shi)??，兩祝(liang)千??(qian)年??(nian)科??(ke)學??(xue)發(fā)??(fa)展??(zhan)都??(dou)經(jīng)??(jing)歷??(li)了??(le)厚??(hou)積??(ji)薄??(bo)發(fā)??(fa)到?(dao)顛??(dian)覆??(fu)性??(xing)改??(gai)變??(bian)、革??(ge)命??(ming)性??(xing)更??(geng)新??(xin)、爆??(bao)發(fā)??(fa)式??(shi)成??(cheng)長??(chang)再??(zai)到??(dao)學??(xue)科??(ke)進??(jin)入??(ru)大??(da)發(fā)??(fa)現(xiàn)??(xian)時??(shi)代?(dai)的??(de)過??(guo)程??(cheng)???！　￡??(chen)新??(xin)滋??(zi)講?(jiang)述??(shu)了?(le)著??(zhu)名??(ming)藥??(yao)物??(wu)及??(ji)重??(zhong)要??(yao)化??(hua)學??(xue)發(fā)??(fa)現(xiàn)??(xian)的??(de)偶??(ou)然?(ran)歷??(li)程??(cheng)?。??青??(qing)霉??(mei)素??(su)的??(de)發(fā)??(fa)現(xiàn)??(xian)極??(ji)具?(ju)傳??(chuan)奇??(qi)色??(se)彩??(cai)??，弗??(fu)萊??(lai)明??(ming)因??(yin)未??(wei)蓋??(gai)好??(hao)培??(pei)養(yǎng)??(yang)皿??(min)??，讓??(rang)霉??(mei)菌??(jun)污??(wu)染??(ran)葡??(pu)萄??(tao)球??(qiu)菌??(jun)??，卻??(que)敏??(min)銳??(rui)捕??(bu)捉??(zhuo)到??(dao)霉??(mei)菌??(jun)周??(zhou)圍??(wei)葡??(pu)萄??(tao)球??(qiu)菌??(jun)的??(de)溶??(rong)解??(jie)現(xiàn)??(xian)象??(xiang)??，開??(kai)啟??(qi)抗??(kang)生??(sheng)素??(su)時??(shi)代??(dai)?。阿??(e)斯??(si)巴??(ba)甜??(tian)的??(de)誕??(dan)生??(sheng)也??(ye)源??(yuan)于?(yu)意??(yi)外??(wai)??，施??(shi)拉??(la)特??(te)研??(yan)究??(jiu)抗??(kang)潰??(kui)瘍??(yang)藥??(yao)物??(wu)時??(shi)??，因??(yin)觸??(chu)碰?(peng)化??(hua)學??(xue)物??(wu)質(zhì)?(zhi)舔??(tian)手??(shou)指??(zhi)嘗??(chang)到??(dao)甜??(tian)味??(wei)??，經(jīng)??(jing)研??(yan)究??(jiu)確??(que)定??(ding)了??(le)這??(zhe)種??(zhong)高??(gao)甜??(tian)低??(di)熱??(re)的??(de)甜??(tian)味??(wei)劑??(ji)?。。