单选题
【正确答案】 C
【答案解析】[听力原文]26-28
One of the most famous tourist attraction in the State of California is the giant redwood. This redwood might be described as "the tree with the moving foot" because it is not even a native Californian, believe it or not.
These trees, which are among the largest anti oldest of all living things, moved to California from the Arctic. Long, long ago they grew in the Arctic. just as enormous and tall as they are today. But the warmer climate drew them southward and it took some seventy - five million years to complete the move.
Carried by birds, winds, and some strong - teethed animals, the seeds of the redwood traveled thousands of miles from what is now the northernmost tip of Alaska to California, their last stand. Only the hardest of seeds survived --a few that visited Europe soon died out. But those that made it to California put down roots, grew into luxuriant forests, anti became camera subjects for the hundreds of thou sands of tourists who visit California's giant redwood each year.
26. Where did these trees grow u long time ago?

[详细解答] 文中第二段第一句话“These trees,which are among the largest and oldest of all living things,moved to California from the Arctic”,这些树作为现存所有生物中最大最古老的物种是从北极迁移到加利福尼亚的,由此可见,这些树从前是长在北极的。
【正确答案】 D
【答案解析】[听力原文]
How long did it take the redwood to complete its tong journey?

[详细解答] 文中第二段最后一句话“it took some seventy five million years to complete the move”,大红杉完成迁移花了 7500万年,所以正确答案是D。
【正确答案】 A
【答案解析】[听力原文]
Which of the following is NOT mentioned as a carrier of the red wood seeds from their birthplace to California?

[详细解答] 根据文中第三段第一句话“Carried by birds, winds,and some strong-teethed animals”可知答案人.游客不是传播大红杉种子的媒介。