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选修7《Lesson 3 Epidemics Explained》PPT课件优质课下载
affects
spreads
infectious disease
Which of the following diseases is epidemic ?
cancer, flu, heart disease
headache, backache,
toothache, stomachache
Flu is caused by virus,which can only be seen under microscope.
Symptoms of flu include headache and sneeze.
If you get flu, you can turn to doctors, who can make a prescription for you, on which the drugs or tablets you need to take will be listed.
病毒
症状
处方
药片
Epidemics
throughout history
What epidemics are mentioned?
1.SARS
2.Bird Flu
3.Black Death
4.Great Flu Epidemic/ Spanish Flu
5.Justinian Plague/ one of the earliest epidemis on record(查士丁尼瘟疫）
Reading strategies
Sequencing of information
1.How is the passage mainly developed?