In the Caucasus region（高加索地区）, nearly 50 out of every 100,000 people live to celebrate their 100^th birthday, and many don’t stop at 100! By comparison, in America only 3 people in 100,000 reach 100. But these Caucasus people aren’t alone. The Pakistani Hunzas, who live high in the Himalaya Mountains, and the Vilcabambans of the Andes Mountains in Ecuador seem to share the secret of long life too.
　　These peoples remain healthy in body and spirit despite the passage of time. While many older persons in industrial societies become weak and ill in their 60s and 70s, some Caucasus people aged 110-140, work in the fields beside their great-great-grandchildren. Even the idea of aging is foreign to them. When asked, “At what age does youth end?” most of these old people had no answer. Several replied, “Well, perhaps at age 80.” The very youngest estimate was age 60.
　　What accounts for this ability to survive (live) to such old age, and to survive so well? First of all, hard physical work is a way of life for all of these long-lived peoples. They began their long days of physical labor as children and never seem to stop. For example, Mr. Rustam is 142 years of age. He remembers his life experience: the Crimean War of 1854; the Turkish War of 1878; the Bolshevik Revolution in 1917. His wife is 116 years old. They have been married for 90 years. Mr. Rustam has no plan of retiring from his life as a farmer. “Why? What else would I do?” he asks. Oh, he’s slowed down a bit. Now he might quit (stop working) for the day after 6 hours in the field instead of 10.
　　All these people get healthful rewards from the environment in which they work. They all come from mountainous regions. They live and work at elevations（海拔）of 5,000 to 12, 000 feet(1,660 to 4,000meters) above sea level. The air has less oxygen and is pollution-free. This reduced oxygen environment makes the heart and blood vessel（血管）system stronger.
　　Another factor（因素）that may lead to the good health of these people is their isolation. To a great extent, they are separated from the pressure（压力）and worries of industrial society.
　　Inherited（遗传的） factors also play some role. Most of the longest-lived peoples had parents and grandparents who also reached very old age. Good family genes may, therefore, be one factor in living longer.
　　Finally, although these three groups don’t eat exactly the same foods, their diets are similar. All of them eat little animal meat. Their diets are full of fresh fruits, vegetables, nuts, grains, cheese and milk. They never eat more food than their bodies need.
　　It is clear that isolation from urban pressure and pollution, clean mountain air, daily hard work, moderate diets, good genes, and a youthful approach to life all lead to the health and remarkable long life of all these people.
【小题1】 What is the main idea of this article?

Choose the best answer（根据短文内容，选择最恰当的答案)
Newcastle is beginning to draw tourists from all corners of Europe. It’s one of the fastest developing cities in the United Kingdom. It is said most visitors come here to see the famous soccer team play. The mood of the locals is often changed by the success or failures of the local team.
Newcastle’s most popular place is the Gate. It’s in the center of the city and has many attractions including bars, restaurants, sports bars, pubs and so on. During a home game it becomes a real home to happiness.
Culture and local history lovers can make their dreams come true by taking one of the local city tour buses. They come and leave every few minutes and stop at all the important historical sites in the city. Also the seats and the environment on the buses are comfortable. It’s the best way to see the city without tiring yourself out or getting cold. Places such as the Hancock Museum and Millennium Bridge are must-see attractions. But be careful if you’re short of time, Newcastle is a big place. So you should be prepared to kill a few hours on one of these buses.
If you want to watch the local team play soccer in the St. James Park, remember to book a ticket as early as possible. The locals are crazy soccer fans, and you’ll find it hard to get a ticket if you don’t wait in the queue early.                                                                                 
As you can see, Newcastle is a fantastic city with so much to be offered and so many things to see. You’re sure to have a wonderful time here!                                   
【小题1】From the passage we know Newcastle is most famous for its_______.