四环素的功能是（）
A.封闭细菌核糖体A位点
B.抑制细菌核糖体移位
C.两者皆有
D.两者皆无
参考答案：A
如果两个三角形有两个角和第三个角的平分线对应相等，那么这两个三角形全等．
.----Did you enjoy yourself at the party?
-----Sorry to say I didn’t. It was ____a meeting than a party.
A．more of
B．rather like
C．less of
D．more or less
