内容正文:
Unit 3
Fit for life
Welcome to the unit &Reading(I)
Medical professionals work hard to keep us healthy. Look at the pictures below and discuss the following questions in pairs.
A surgeon performs operations.
A physician is trained in general medicine.
A chemist prepares and sells medicines in a shop.
A dentist specializes in the care of people’s teeth.
b
d
c
a
What do you know about genes?
Why do you look like your father or mother?
Step 1 Lead-in
What do you know about genes?
A gene is a small section of DNA which controls a particular quality in a living thing that has been passed on from its parents.
What’s going to be talked about in the lecture, according to the title?
Prediction
Step 2 Pre-reading
Skimming
Please find the topic sentences of each paragraph.
Step 3 While-reading
Pay attention to the first sentence and the last sentence!
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