7.rather than而不是

8.a lack of缺乏，缺少

9.be harmful to对......有害

10.lead to导致

11.stop sth. in its tracks终止；消灭

12.leave out漏掉，忘掉

Ⅲ.重点句式

1.现在完成进行时

Since the SARS epidemic ended，scientists have been doing(do) trials on treatments to prohibit any future outbreaks.自从"非典"疫情结束后，科学家们就已经着手做治疗实验以防止将来再次爆发。

2....be believed to have done...被认为......

Having killed up to 50 million people in 18 months，with a tendency to strike the young and fit rather than the old，the Spanish Flu is believed to have been(be)the most acute epidemic in history.

西班牙流感在18个月的时间里就杀死了5 000万人，它有传染年轻人和身体健康的人而不是老年人的倾向，因此西班牙流感被认为是人类历史上最严重的传染病。

3.leave＋宾语＋宾补

It struck near the end of the First World War and left families mourning(mourn) worldwide.

它爆发于第一次世界大战接近尾声时，使全球的家庭陷入了一片哀声之中。

Ⅰ.根据课文内容判断正(T)误(F)

1.Flu kills millions of people every year.(T)

2.Most diseases are very new.(T)

3.Epidemics have affected historical events.(T)

4.It takes years for a disease to spread worldwide.(T)

5.Epidemics can wipe out up to half of the population in urban areas.(T)

Ⅱ.课文阅读理解

1.Why is it important to look at the spread of diseases through the history?

A.Because it can enlarge our knowledge.

B.Because many epidemics could be the next global epidemics.

C.Because people are curious about the history of epidemics.

D.Because it can help us discover the causes and effects of epidemics，and foresee and prevent them in the future.