单项选择题

Questions 17—20 are based on the following talk given by a zoologist. You now have 20 seconds to read Questions 17—20. What is the purpose of the speaker researching the project

A．To prepare material for the class.
B．To do a research of this kind of bear.
C．To prevent them from becoming extinct.
D．To discover where the bears go.

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单项选择题

What does the speaker emphasize as the reason for maintaining sea resources

A．It is important for food resources.
B．The great fisheries are to be exhausted.
C．The noted biologist insisted on it.
D．Fishes are fewer than Indian tigers.

单项选择题

Why are the city’s museums economically important

A．They have hotels and stores.
B．Tourists are brought to the city by them to spend money.
C．Hotels are beside the museums.
D．They need money to build the museums.

Questions 17—20 are based on the following talk given by a zoologist. You now have 20 seconds to read Questions 17—20. What is the purpose of the speaker researching the project 您的浏览器不支持 audio 元素。

Questions 17—20 are based on the following talk given by a zoologist. You now have 20 seconds to read Questions 17—20. What is the purpose of the speaker researching the project