布鲁斯(Bruce)效应
参考答案:
又称妊娠中断效应,陌生公鼠外激素中断母鼠妊娠的一种效应。12药用动物是指身体的全部或局部可以入药的动物,它们所产生的药物统称为动物药。
— Tom, you are supposed to hand in the final-term paper next Friday.
— __________. [ ]
A. So what?
B. Well, I won't miss the deadline.
C. Really? Who told you that?
D. Oh, now I am under great pressure.
|3.14-π|的值为 [ ]
A.0
B.3.14-π
C.π-3.14
D.0.14