31 the young and fit rather than○32 the old, the Spanish Flu is believed to○33 have been the most acute○34 epidemic in history. More people died of the flu than died in the war. Yet, somehow○35， it was forgotten by history until very recently when SARS became a cause for concern○36.

The SARS epidemic began in 2002 with a lung disease in Guangdong Province and spread quickly after Dr Liu Jianjun, the carrier○37， came to Hong Kong and passed the virus to○38 people who carried it to Canada, Vietnam and Singapore.

○28strike在此表示"爆发"。

○29mourn/mɔːn/vi.& vt.感到悲痛；表示哀悼

left families mourning是"leave＋宾语＋宾补"结构，此处用现在分词作宾补。

○30现在分词短语having killed ...作原因状语。kill这一动作先于is believed动作发生，故用现在分词的完成式。

○31a tendency to do sth.做某事的倾向

strike在此表示"(疾病、灾害)侵袭，袭击"。

○32rather than而不是

○33Sb./Sth. be believed to ... ＝It is believed that ...

○34acute/ə'kjuːt/adj.严重的；剧烈的

○35somehow adv.不知怎么地，不知为什么

○36concern n．[C，U]关心的事，重要的事；关系，关联；担心，挂念

○37carrier/'kæriə/n.带菌者

○38pass ... to ...把......传递给......

pass down流传； pass on流传，传递； pass by经过； pass away消亡

[第8～10段译文]

另一次类似情况传播的传染病发作是1918年大流感，又被称为西班牙流感。它爆发于一战即将结束之时，使世界各地的许多家庭饱受丧亲之痛。

西班牙流感在18个月的时间里夺去了多达5 000万人的生命，该病似乎专门袭击年轻力壮的人，而不是年迈之人，被认为是历史上最严重的传染病。被疾病夺去生命的人比在战争中丧生的人还要多。然而，不知什么原因它被历史遗忘了，直到最近"非典"成为人们关注的焦点。

"非典"始于2002年广东省的一起肺部疾病，在病毒携带者刘建军医生到达香港后该病迅速传播，他将病毒传染给其他人，而这些人又将病毒带到加拿大、越南和新加坡。

Over nine months, the number of global cases○39 passed 8,000 and 774 people died. Although these statistics○40 are much less impressive○41 than those for the Spanish Flu, SARS was still very alarming○42 for a few key reasons.

No one really knew much about SARS as it was completely new.This meant that there were no prescription○43 drugs or tablets○44 to treat it and doctors were not sure how to prevent○45 it either.Since most people had no natural defences against the disease, it was also harmful to the doctors and nurses treating SARS patients○46.

Since the SARS epidemic ended，scientists have been doing○47 trials○48 on treatments to prohibit○49 any future outbreaks○50. Modern communication technology and medical research techniques allow health experts all over the world to unite, share knowledge, and work together without pause○51 to help put SARS behind○52 us.