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《Listening and vocabulary》PPT课件优质课下载
What I know
What I want to know
What I learned
?
?
?
Part 1: Para______
1--3
Basic information about cloning & DNA
Reasons for and against cloning
Part 2: Para______
4--8
structure
part
discovered
facts
(para.1-3)
three definitions
three milestones(里程碑)
Quiz
Quiz
1. What is DNA?
It’s a transparent twisting ladder
made of the fundamental components of life. (para.1 line5)
2. What is an enzyme?