单项选择题

Questions 14—16 are based on the following passage. You now have 15 seconds to read Questions 14—16. 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.

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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.

单项选择题

How do the speaker and his assistants trace the grizzly bear

A．By tracing them.
B．By using computer system.
C．By using computer technology.
D．By studying science papers.

Questions 14—16 are based on the following passage. You now have 15 seconds to read Questions 14—16. What does the speaker emphasize as the reason for maintaining sea resources 您的浏览器不支持 audio 元素。

Questions 14—16 are based on the following passage. You now have 15 seconds to read Questions 14—16. What does the speaker emphasize as the reason for maintaining sea resources