阅读短文,语法填空。Sniffer dogs (嗅探犬) are very common at airports all over the world, where pe
Sniffer dogs(嗅探犬)are very common at airports all over the world,where people use them to look for things against the law.Now some dogs are using their noses for a(1)___(difference)purpose -- coronavirus. Dogs specially trained(2)___(discover)COVID-19 have started sniffing passengers ...
3.Did they find their camera at last?4.How many pictures didn't they take when their pictures of the camera came out?5.Who found the camera and who took the pictures?(3)A sniffer dogHi,I'm Lucy a-sniffer dog(缉毒犬).The sniffer dog is different from other do...
Food snitTer dogs(嗅探犬) Food sniffer dogs work at international airports in the United States. Their job is to smell and find illegal(不合法的) fruits, vegetables and other foods in bags and mail. These foods sometimes bring insects and diseases which could be dangerous for plants and anima...