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《Warming up、Pre-reading、Reading、Comprehending》新课标PPT课件优质课下载
A strawberry plant
一株草莓依靠它沿地“爬走”的匍匐茎,一年内就能长出数百株草莓苗
The new plants that grow from the runners are exact copies of the original plant.
Growing new plants
Twins
Dolly the sheep
She was cloned while the others were born naturally.
Dolly was a ______ sheep.
cloned
How does Dolly differ from other sheep?
1996 cloning sheeps
Some achievements in cloning technology
2001 cloning cattle
我国成功繁殖克隆兔 体形要比普通兔大许多
2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔。
2002 cloning cats
第一只克隆宠物猫
克隆马及其“母亲兼姐姐”
2002年4月十六日美国第一头克隆牛“艾米”产下牛犊喜作妈咪
2005 cloning dogs
克隆的荧光小猪(左)和正常小猪(右)
Reading:Skim the following passage and match the paragraph with the correct sentence.
Para 1 A.The problems of Dolly
Para 2 B.The two major uses of
cloning