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A、tricuspid valve
B、bicuspid valve
C、mitral valve
D、semilunar valve
A、Nanjing
B、Xi’an
C、Beijing
D、Kunming
A、The site of historical interest has astonished every tourist.
B、Göbekli Tepe resembles Stonehenge but the carving is not as intricate as that of Stonehenge.
C、The significance of Göbekli Tep’s excavation is yet to be defined.
D、Göbekli Tepe provides scientists with evidence that human beings can make history.
A、Documentary credit.
B、Payment in advance.
C、Open account trading.
D、Documentary collection.
A、those who provided scientific ideas or comments
B、those who funded the research
C、those who offered facilities/equipment
D、those who gave moral support
2. Please design three pairs of primers for this sequence. >NM_118791.4 Arabidopsis thaliana calcineurin B-like 3 (CBL3), mRNA AAATTATTTATTTTTTAAATTTAAAAAGTATAAAAACGCCAACAAACAAAAATAATTTGGTCTTTTTCTTAGCATATTTAAAATTTTGCAATATATTCATTCTGCTTATAGAAAATCGTGTCGACCTTTTTTCTCTCACTTACCCAATAAGAGCTTTTTTCGCGTTTTCCACCGCAACCACCGTCACCTTCAACCGCCGGAGCCGCCGCAAGGAAGGCTCATCATCCGCCGTGGCAATTTTTTGAGGTGTACAAAGCATTGCCTATTTGACGAACCAGGAAATGGTTAAAAGGCATGGAGAGTTTTGATTTACAAGATATATCATGTCGCAGTGCATAGACGGTTTCAAGCATGTATGCTCCTCTTTTTTCCGGTGTTTTGATATCGATATTTACAAACAATCTGGAGGCCTTGGTGACCCTGAACTTCTTGCGAGAGAGACAGTTTTTAGCGTGAGTGAAATAGAGGCTCTCTATGAGCTGTTTAAGAAAATCAGCAGTGCTGTGATTGATGATGGGCTAATAAACAAGGAAGAATTTCAGTTAGCCTTGTTCAAGACAAATAAAAAAGAGAGCTTGTTTGCAGACCGGGTATTCGATTTGTTTGACACAAAGCATAATGGAATACTGGGGTTTGAGGAGTTTGCGCGTGCTCTCTCTGTCTTTCATCCAAATGCTCCCATAGAAGACAAGATTGACTTTTCGTTTCAGCTATATGATCTTAAGCAGCAAGGTTTCATAGAGAGGCAAGAGGTGAAGCAAATGGTGGTGGCTACTCTTGCTGAGTCCGGCATGAACCTGTCAGACGAAATCATAGAGAGTATAATCGACAAGACATTTGAGGAAGCTGATACAAAACATGACGGGAGGATCGATAAGGAAGAGTGGAGAACCCTTGTTCTCAGGCATCCTTCCCTTCTAAAGAATATGACTCTCCAGTATCTTAAGGATATAACAACTACATTTCCGAGCTTTGTGTTCCACTCGCAGGTGGAAGATACCTGAGAAAAACAATAGCATATTAGCAGAGGAGACAATTTGGGAATTGTGTTTGTTTTCTGATTATGTATCATGTCTATTTGTTTCAATCTCTCTGAACATTTTCAAGATTTTGTTGTTACTTGTGTGAATTAAAAGTAAAGAAAACAAATCTGTATTTTTGCTACTCCTGATTTTGATTGCTGATTTTCTCCTCGCATCTGTAGATATACTACTAACCTTGAGACATGA
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