Condors have been killed by （）

单项选择题Why is lead poisoning a new problem for condors（）

A．Hunters shoot condors.
B．Puppet rearing practices have caused it.
C．Hunter's bullets contain lead which poisons the meat condors eat.
D．They never used to like lea

单项选择题When the nurse talked to Mum she thought Mum was a（）

A．nurse
B．visitor
C．patient
D．cleaner