操纵子的基因表达调节系统属于
A．复制水平调节B．转录水平调节C．翻译水平调节D．翻译后水平调节
参考答案：B
—I think art is very interesting.
—_________.Music is more interesting than art.[ ]
A. I disagree
B. I think so
C. I agree
D. I don't know
症见手足厥寒，口不渴，或腰、股、腿、足疼痛，舌淡苔白，脉沉细或细而欲绝。宜选用
A．四逆汤
B．大秦艽汤
C．阳和汤
D．独活寄生汤
E．当归四逆汤
