组成DNA的核苷酸包括三个部分,以下哪些描述是正确的?()
A.碱基相同
B.磷酸基团相同
C.脱氧核糖相同
D.以上三种物质都不同
参考答案:B, C
小题1:We should remember those brave _____________.
小题2:___________, they passed yesterday’s exam.
小题3:At the beginning of the trip, I felt very _________.
小题4:The old man is even _________ today.
小题5:It is not right to think English is ________.
smbd and nmbd daemons的配置文件是()。
A./etc/exports
B./etc/smB.conf
C./etc/samba/config
D./usr/local/sambA.cfg