单选题Questions 17- 20 are based on the dialogue. You now have 20 seconds to read Questions 17-20.
单选题
Why does the woman say she has mixed feeling ? A. She wasn't quite ready to come back to campus. B. There are more endangered species in zoos than in the wild. C. The birds won't learn to keep away from people. D. She might change her major.
【正确答案】
A
【答案解析】[解析] 17-20 M: Hi, Claire. How does it feel to be back on campus? W: Gee, Hi, well, to tell you the truth, I have mixed feelings. M: Oh, why? W: I have this great summer job that I really hated to leave. I worked at the wild life research center in Maryland. M: That makes sense for a genetic major. What did you do? Clean the cages? W: This is a wild life center, not a zoo. This place breeds endangered species and tries to prepare them for life in the wild. M: You mean the endangered species like the tiger and the panda? W: Well, endangered species, yes. But not tigers or pandas. I work with whooping cranes and sandhill cranes. I taught the baby crane how to eat and drink, and I help the vets to give medical check-ups. M: I can see it was hard to leave that job. But how did you teach a bird how to eat and drink? W: We covered ourselves up with cloth and used puppets made out of stuffed cranes to show the baby chicks what to do. Then the chicks copied what the puppets did. M: Cloth? Puppets? Sounds like fun. W: It was. The cloth and puppets are the key tools. We all covered ourselves up, the scientists, the vets, the junior staff, everybody, You see, baby cranes will become attached to their caretakers. M: So if the caretaker is a person, the crane will stay in places where people are. W: Yeah. And their chances for survival aren't very good. But by covering ourselves and using cloth and puppets the chicks are more likely to seek out other birds rather than people. And their transition to the wild has a better chance of being successful. M: A chance of being successful? Hasn't this been done before? W: It's been done with sandhill cranes and everyone is optimistic about its work with whooping cranes too. M: If this works, it should increase the number of cranes in the wild. W: Yeah. It's exciting, isn't it?
题目问“为什么女的说有复杂的感情?”，可以从她对暑期工作的态度来判断，她说“I have this great summer job that I really hated to leave．”，所以说她还没准备好回校。
单选题
What was the woman's job? A. Counting wildlife B. Cleaning cages C. Training baby birds D. Making puppets
【正确答案】
C
【答案解析】根据“I worked at the wild life research center in Maryland．”以及后面的“This place breeds endangered species and tries to prepare them for life in the wild．”和“I taught the baby crane how to eat and drink，”判断答案是C。
单选题
Why does the man mention tigers and pandas? A. He once had a job in a zoo. B. They're familiar examples of endangered species. C. He's interested in the genetics of mammals. D. They also become attached to humans.
【正确答案】
B
【答案解析】此题既要根据全文内容，又要根据常识进行综合判断。
单选题
Why do the staff members cover themselves with cloth as they work? A. So that they are protected from scratches by the crane's talons. B. So that they aren't exposed to infectious diseases. C. So that the chicks can be examined in a sterile environment. D. So that the chicks don't become dependent on human being.