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师梦圆高中英语教材同步外研版选修6Listening and vocabulary下载详情
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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?