文艺节目的重心在于传播文化（包括艺术）观念或内容，娱乐节目的重心在于娱乐大众。
A. 对
B. 错
All the following statements about genetic code are correct except:
A. It is degenerate
B. It is unambiguous
C. It is nearly universal
D. It is overlapping
A codon AUG is a:
A. Chain-initiating codon
B. Chain-terminating codon
C. Releasing factor for peptide chains
D. Recognition site on the tRNA
In biosynthesis of proteins, the chain-terminating codons are:
A. UAA, UAC and UGA
B. UGG, UGU and AGU
C. AAU, AAG and GAU
D. GCG, GCA and GCU
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