【導(dǎo)讀】1.Whatisaclone?naturalandman-madeclones.cloning?Alzheimer’sdisease).babies.arecloned?children.favoritepets.ISITLEADINGUS?benefittheworld.thetext.thesheep_____.providestheegg.advantageofcloning?purposes.producedbycloning.beingextinct.awaycanbecloned.cloning?wrong?world.medicalaid.because____.eachparagraph.andplant.being.