1.________,itimmediatelyranaway.
A.ObservingherB.Onbeingobserved
C.HavingbeenobservedD.Onherbeingobserved
2.原句:Apumawillnotattackahumanbeingunlessitiscornered.
Apumawillnotattackahumanbeingunlessitfeelsitselftobe________
A.inacornerB.inatrapC.atanangleD.undercover