Lesson 8 Selective Breeding 1-2 No. 4 1For 2Humans １ many centuries, dogs and humans have been together. have enjoyed the 3Dogs companionship and loyalty that provide. have enjoyed the care and protection that give. 4Dogs, 5For however, have been for more than companionship. instance, humans have used the 6Their abilities of dogs make them natural hunters. ability to see clearly in low light useful in 7Their 8In finding targets. great sense of smell is a good for hunting. addition hunting, a dog’s 9Larger strength and patience are useful to humans. breeds are often used as working dogs, 10In mostly on farms, for carrying heavy loads as wood. addition, it is common for people are not 11Many able to see to employ more intelligent and early maturing breeds guide dogs. services that dogs provide have them an invaluable part of human society. tool / that / as / dogs / used / to /living / made / such / is / humans / who 12Although ２ dogs have many useful characteristics, humans have long bred dogs to their 13The 14Pairs natural abilities. hunting dog is one example of breeding. of dogs are for mating 15The based on the length of their noses and the size of their nose holes. babies of the breeding
Lesson 8 Selective Breeding 1-2 No. 4 １ 1For many centuries, dogs and humans have been together. 2Humans have enjoyed the companionship and loyalty that provide. 3Dogs have enjoyed the care and protection that give. 4Dogs, however, have been for more than companionship. 5For instance, humans have used the abilities of dogs make them natural hunters. 6Their ability to see clearly in low light useful in finding targets. 7Their great sense of smell is a good for hunting. 8In addition hunting, a dog’s strength and patience are useful to humans. 9Larger breeds are often used as working dogs, mostly on farms, for carrying heavy loads as wood. 10In addition, it is common for people are not able to see to employ more intelligent and early maturing breeds guide dogs. 11Many services that dogs provide have them an invaluable part of human society. tool / that / as / dogs / used / to /living / made / such / is / humans / who ２ 12Although dogs have many useful characteristics, humans have long bred dogs to their natural abilities. 13The hunting dog is one example of breeding. 14Pairs of dogs are for mating based on the length of their noses and the size of their nose holes. 15The babies of the breeding
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