单项选择题
A．They have captured all the condors. B．Birds raised in captivity are attracted to humans. C．Hunters want to shoot them. D．There is not enough food for condors.
A．Let all condors free. B．Don't allow anyone to hunt. C．Make hunters use different kinds of bullets. D．Move the condors out of Californi
A．shooting B．poisoning C．electrocution D．all of the above