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34. Why are people interested in cloning extinct species?D. They want to see biodiversity.C. They need them for research.B. They lack sources of modern art.A. They expect to seek hunt fun.33. What's the barrier to cloning a living embryo?D.Living cells can't be sequenced.C. Biologists are opposed to it.A. DNA is hard to keep for long.32.What is paragraph 2 of the text mainly about?D. The application of PCR technology.C. An inspired guess of de-extinction.B. The development of DNA.A.A science fiction review.acces（排泄物），thatsupportedsomuch flora（植物群）.sequenced（测定序gical justification for the project toce a DNA sequenceproteior somethingC.But it was worth it.B.But,forget this.A.So, don't give up.reach it."proving24843.A.realized42.A.insisted onsaucator.44.A.talent1.A.demonstrated46.A.watch45.A.willing48.A.crazy47.A.supportey on the field！arching band49.A.impression51.A.routines50.A.put up with49By their next rehearsal（排练），Adam had already 50a wahis teacher was. Adam was determined to help every student gen with spina bifida（脊柱裂）and uses a wheelchair.When heC、D四个选项中选出可以填入空白处的最佳选项B.dreamed ofB.ignoredB.suspected,Casey wasn't sure he'd ever get off the sidelines.HoweverB.responseB.playB.satisfiedB.rigidB.preferenceB.examplesB.agreed withC.admiredC.kept onC.toughnessC.connectedC.borrowC.afraidC.devotedC.expectationperiorm as aC.confidenceC.feclingsC.come up withD.approved ofD.evaluatedD.sharedD.styleD.acceptD.sorryD.recommendatD.strictD.dealt withD.cxperienceD.advantag_well