听力题 One of the most famous tourist attractions 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 and 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, and became camera subjects for the hundreds of thousands of tourists who visit California''s giant redwood each year.