Theme-relatedRead the passage carefully until you have got its main idea, and then select one appropriate word for each gap from the box following the passage.Since Dolly came into existence, scientists and politicians have been worrying about the ____________ (1) that it will soon be possible to clone humans, too. The debate centers on two types of cloning: reproductive, with the ____________ (2) of producing a baby, and therapeutic, with the aim of creating a source of "embryonic" stem cells that might replace diseased organs of the body.Cloning has both strong supporters and fierce critics. ____________ (3) the deeply held moral and technological objections of many people, human cloning took a small step forward this week with an announcement by researchers that they had successfully created a human embryo through cloning, for the purpose of _____________ (4) stem cells. They are not the first to lay claim to such a feat, but they are the first to___________ (5) their findings. Their work was promptly ______________ (6) by President George Bush, who said it was morally wrong, and by the Vatican, ___________ (7) many others.From a technical _____________ (8), such strong opposition seems out of line with the slender scientific significance of this development. The researchers used what has become ____________ (9) cloning method in animals. This is to remove the nucleus(核) containing genetic material from a donor egg, and replace it with the nucleus of another cell. The resulting stem cells would then be genetically identical to the donor, avoiding problems of ____________ (10) when they are returned to the patient in treatment.standpointtogetherstandardintentionDespiteargumentrejectionprospectwithoutpublishcondemnedAlthoughdevelopingamong approved