题目内容
(请给出正确答案)
[多选题]
DNA分子的碱基组成特点是( )。
A.A/T=1
B.(G+C)/(A+T)=1
C.G/C=1
D.(A+G)/(C+T)=1
答案
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A.A/T=1
B.(G+C)/(A+T)=1
C.G/C=1
D.(A+G)/(C+T)=1
第9题
B.Though a student of English
C.Student of English
D.Being a student of English
第10题
A.a copy of explanation of words and structures
B.a timetable for activities
C.transcribed procedure of classroom instruction