2013牛津译林版选修七Unit 2《Fit for life》ppt课件3.ppt

Unit 2 Fit for life
Reading
Two life-saving medicines
Aspirin has saved many people’s lives by reducing fever and helping stop p____. Lawrence Craven introduced the idea that aspirin could reduce the r____ of heart attacks by thinning blood. In 1971, Smith and Willis p____ that aspirin was a blood-thinning medicine and a study showed that a chemical in aspirin could prevent a s____. In 2003, a Chinese doctor found that this chemical could reduce blood s____ levels and help people with diabetes.
Aspirin
pain
risk
proved
stroke
sugar
Penicillin, discovered by Alexander Fleming in 1928, is c________ to be one of the most important medicines in contemporary s_____. Howard Florey and Ernst Chain managed to use new chemical t________ to purify it to be a medicine. Due to its widespread use, many lives were saved during World War II. Penicillin is also used to treat other illnesses i______ pneumonia. In 1945, Fleming, Florey and Chain s_____ the Nobel Prize in Medicine for their work.
Penicillin
considered
society
techniques
including
shared
A
S
P
I
R
I
N
1897
1899
1900
1953
1977
1999
2003
P
E
N
I
C
I
L
L
I
N
1928
World War II
1945
Difficult points
In the one-year trial, you must work hard and prove your ability.
trial (n.) ---try (v.): a test to see if something is effective or someone is suitable
1. The first trials of this medicine took place in 1899, when pany Hoffmann worked for began distributing the medicine in powder form to physicians to use with patients. Lines13-15
1) Clinical trials should be done before a new drug can be put into use.
2) The first trial flight has been a great ess.
3) They let me have puter on trial for three months.
4) It was by/through trial and error that I learnt most of what I know about gardening.
Not only has aspirin proved vital for reducing fever and helping stop pain,but there are also other things that aspirin can help with. Line18-line 19
此句是not only…but also …结构.
Not only …but also 连接两个并列分句。当