题目内容

“Dogs love to retrieve objects so the towel becomes a reward,” says Morris Berkowitz, who heads up a ____(犬的) drug-sniffing program in New York.

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At “Helping Hands Monkey Helpers for the Disabled,” ____(僧帽侯) monkeys are trained twice before being teamed with a disabled human.

Today, dogs may be employed to sniff out illegal substances in school lockers or earthquake victims buried beneath the rubble of a ____(倒塌) building or highway.

The answer: career-training. Trainers teach the animals to obey their instructions through a process called ____(训练) .

At “Helping Hands Monkey Helpers for the ____(伤残的),” capuchin monkeys are trained twice before being teamed with a disabled human.