SectionⅠReading(Introduction&Reading)SomeanimalsthathavebeenclonedCloninghasalwaysbeenwithusandisheretostay
Scientistshavebeeneffectivelycloninganimalssincetheearly1960s
AnAsiancarpwasclonedsuccessfullyin1963
Dollysawthelightofdayin1997
Sheliveduntiltheageofsix
Thefirstclonedmammal,Dollyisconsideredtobeagreatsuccess
Later,severalhundredotherDollieswerecloned
However,itlivedforonly6years,halfthelengthofthelifeoftheoriginalsheep
ClonedinHawaiiin2000,thefirstsuccessfulmouseclonewasborn
Sheliveduntiltheripeoldageoftwoyearsandsevenmonths,avictoryforherresearchers
ClonedinJapanin1998,thecowspavedthewayforotherclonesdesignedtoproducebettermeatandmilk
In2000,thesuccessfulcloningofOmbrettatheMouflon,anendangeredanimal,proved[阅读障碍词]effectivelyadv
有效地ripeadj
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