所谓的神经元网络的自学习就是通过一系列试验去更新调整（）。
参考答案：加权值
— What do you think of your teacher?
— He often _____ funny jokes and always _____ us _____. [ ]
A. speaks, makes, laugh
B. tells, makes, laugh
C. says, makes, laughing
D. tells, makes, to laugh
下列哪种情况下FEV1最低？（）
A.哮喘病人发病时
B.健康个体
C.哮喘病人用过β2受体激动剂后
D.支气管组胺激发试验后
