【正确答案】 D

【答案解析】[听力原文] 22-25
M: Have you ever visited a redwood forest? I really think I should because of the Muir Woods National Monument North of San Francisco.
W: I've never seen a redwood tree; I really can't imagine how big they are.
M: The dictionary says they're the tallest living things. Some are more than one hundred and six meters high. But none of the trees in Muir woods is that all. You have to go further north in California to see the tallest trees.
W: You said that Muir woods are near San Francisco? I guess it must be quite a tourist attraction.
M: Yes, it's less than an hour's drive away it's easy to get to.
W: I've heard that many redwood trees are thousands of years old. Are the ones in Muir woods that old?
M: The oldest documented age for a coastal redwood tree is more than two thousand years, the trees in Muir Woods are 400 to 800 years old.
W: Why do they survive so long?
M: They have remarkable resistance to forest fires, their tough, thick broke protects the trees during a fire. The Coastal redwoods also like a damp, foggy climate.
W: Well then. Since Muir woods is near foggy San Francisco. It must be ideal for the trees survival. I can't wait to go there and see them.

关键句“You have to go further north in Californian to see the tallest bees”。