题型：语法填空（语篇） 题类：常考题 难易度：困难
人教版（新课程标准）高中英语必修3 Unit 2同步练习二
Dogs are very popular pet. Most of them just live with their families. But some dogs have very special jobs (do). A group of dogs (know) as "Therapy Dogs". These dogs are family pets with special training, allows them to go into public buildings and comfort people need. The dogs are trained to be calm and quiet. Loud noises and unfamiliar places don't frighten them. They enjoy spending time with people.
Some therapy dogs go into places, such as hospitals and nursing homes. When the dogs visit the patients, the patients are cheered up. They have fun (pet) the dogs and look forward to their visits. The dogs help to brighten their day. Therapy dogs can improve people's health as well. Studies show that when people pet animals, their blood (press) and heart rates go down. They are calmer and (they) mood improves.
Other therapy dogs work in schools and libraries. They serve as warm and caring (friend) to children, but they also do (much). In one town in California, therapy dogs have become children's reading buddies. The dogs make a great audience. The children look forward to reading to the dogs, and the dogs love the attention.
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