12. Long noncoding RNAs__________.
(A) are transcribed by RNA polymerase I rather than by RNA polymerase I
(B) do not have their introns removed
(C) are missing a 5' cap and 3' poly( A ) tail
(D) may regulate the expression of protein-coding genes
(E)encode large proteins

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統計: A(0), B(0), C(0), D(1), E(0) #2778301