古核细胞与原核细胞的不同点表现在()、()、()、核糖体、和5SrRNA。
参考答案:细胞壁成分;DNA与基本结构 ;核小体结构
It shames to me to say it, but I told a lie when _______ at the meeting by my boss.
A.questioning
B.having questioned
C.questioned
D.to be questioned
病毒含有的核酸通常是()
A.DNA和RNA
B.DNA或RNA
C.DNA
D.RNA