2014-2015学年高中英语(精品)同步
教案第6课时:unit 2 cloning人教新课标选修8)
i. reading comprehension:
hello, dolly!
british scientists have done something that many people thought was impossible: they created the first clone of an adult mammal. the clone, named dolly, is a seven-month-old sheep, grown from a cell of an adult female sheep.
what is a clone? a clone is