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9,17,13,15,14,()A.13 B.14 C.13.5 D.14.5
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3,3,4,5,7,7,11,9,______,______ () A.13,11 B.16,12 C.18,11 D.17,13
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9,17,13,15,14,() A.13 B.14 C.13.5 D.14.5
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9,17,13,15,14,()A.13B.14C.13.5D.14.5
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9,17,13,15,14, ()。A. 13B. 14C. 13.5D. 14.5
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9,17,13,15,14, ()。A. 13B. 14C. 13.5D. 14.5
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9,17,13,15,14,()A.13B.14C.13.5D.14.5