判断一种抗精神病药是否有效至少要足量使用的时间是
A.4周
B.5周
C.6周
D.7周
E.8周
参考答案:C
根据汉语意思完成句子。
1.他们请他走人,也就是说,他被解雇了.
They asked him to leave ,he was dismissed.
2.他和妻子吵架了,因为他的妻子对他撒谎.
He his wife because she lied to him.
3.她一字不差地把他们的谈话对我复述了一遍.
She repeated their conversation to me.
4.我可以和你谈下吗?
Can I you?
水体污染物的转化是指( )。
A.污染物从一点转移到另一点
B.污染物从一种介质转移到另一介质
C.污染物改变了原有的化学性质、毒性和生物学效应
D.污染物在水中逐渐扩散,以致于浓度降低
E.污染物在水中只发生浓度的变化