It is generally considered unwise to give a child       he or she wants.[ ]

A. however        

B. whatever        

C. whichever      

D. whenever

支气管哮喘急性发作的肺功能异常主要表现为（）

A.最大通气量增加

B.第一秒钟用力呼气容积减少

C.肺活量减少

D.弥散量下降

E.功能残气减少