填空题 Directions: After reading the following passage, you should give brief answers to the 5 questions (No.1 to No.5) that follow. The answers (in no more than 3 words) should be written after the corresponding numbers on the Answer Sheet.. The Arctic Circle(北极圈) is an imaginary line about 1,650 miles from the North Pole. About one million people live within the area bounded by the Arctic Circle. The land there is the great tundra(苔原) region of the world. Tundra is a Russian word which means "marshy plain". For nine months of the year, the tundra region is a great white plain. The ground is frozen hard. But in summer the tundra is covered with flowers, thick grass, and moss. A surprisingly large number of animals live in the tundra area. Rein deer are used for transportation, food, and clothing by the northern peoples. Other animals are polar bears, musk oxen, Arctic hares, and lemmings. In summer, wolves and foxes migrate to the tundra. Some of the tundra region is very much like the deserts of the world. To be sure, tundra temperatures are low while desert temperatures are usually high. But in both regions there is little rainfall, not much plant life, and few people小题:What is the similarity between the tundra region and the desert? Both of them have little rainfall, not much plant life and ____