—Are you busy today?

—Yes, I have ______ homework to do.

A．a lot

B．many

C．plenty

D．much

下列药物中可诱发支气管哮喘的是

A．硝普钠

B．洛贝林

C．酚妥拉明

D．酚苄明

E．普萘洛尔