题目

某条多肽的相对分子质量为5354，若氨基酸的平均相对分子质量为110，如考虑终止密码子，则编码该多肽的基因长度至少是（）      A．58对碱基                    B． 59对碱基              C．   177对碱基     D． 174对碱基 答案：C–What do you think of teaching, Bob?–I find it fun and challenging. It is a job ___ you are doing something serious but interesting.A．whereB．WhichC．WhenD．that