题目

(8分)某兴趣小组根据金属镁与C02的反应，推测金属钠也能与C02发生反应，因此   他们用下图所示的装置进行“钠与C02反应”的探究(尾气处理装置略去).又知实   验过程中的C02气体为足量；设能发生的反应都进行完全；一氧化碳气体可用氯化钯 (PdCl2)溶液来检验(通过溶液颜色的变化来判断)。 (1)为了使制取气体的装置能“随开随用，随关随停”，则在图中A处应选用的装置是    (填“I”、“Ⅱ”或“Ⅲ”).若要用干燥、纯净的C02气体与金属钠反应，则In the Caucasus region of the Soviet Union, nearly 50 out of every 100,000 people live to celebrate their 100th birthday, and many don’t stop at 100! By comparison, in America only 3 people in 100,000 reach 100. But these Soviet old people aren’t alone. The Pakistani Hunzas, who live high in the Himalaya Mountains, and the Vilacbambans of the Andes Mountains in Ecuador seem to share the secret of long 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 Soviet Georgians, aged 110 to 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 has no answer. Several replied, “Well, perhaps at age 80.” The very youngest estimate was age 60.What accounts for this ability to survive 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 begin their long days of physical labor as children and never seem to stop. For example, Mr. Rustam Mamedov is 142 years of age. He remember his life experiences: the Grimean 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. Mamedov has no intentions of retiring from his life as a farmer. “Why? What else would I do?” he asks. Oh, he has slowed down a bit. Now he might quit 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 of 5,000 to 12,000 feet (1,660 to 4,000 meters) above sea level. The air has less oxygen and is pollutionfree. This reduced-oxygen environment makes the heart and blood vessel system stronger.Another factor that may contribute to the good health of these people is their isolation. To a great extent, they are separated from the pressures and worried of industrial society.Inherited factors also play some role. Most of the longest-lived people had parents and grandparents who also reached very old ages. 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. The Hunzas, Vilacbambans, and Soviets 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 pressures and pollution, clean mountain air, daily hard work, moderate diets, good genes, and a youthful approach to life all contribute to the health and remarkable long life of all these people.【小题1】 What kinds of things contribute to the remarkable long life of these peoples? A．Moderate dietsB．Clean mountain air. C．Daily hard work.D．All the above factors（因素）.【小题2】 How do you think the author feels about these long-lived people?A．He is impressed with themB．He doesn’t care.C．He doesn’t like them.D．He admires them.【小题3】According to the passage, the phrase “the passage of time” means         .A．have time to do what they wantB．being on timeC．time going byD．limited time【小题4】In the passage, why does the author describe Mr. Mamedov?A．An example of a typical long life among these people.B．An example of an unusual long life among these people.C．An explanation of why he is still healthy.D．An example of why his wife died early than him.【小题5】What is the main subject of this article?A．Mr. Mamedov’s life. B．A description of several societies where people live a long time.C．Suggestions for how you can live long life.D．People are healthy in mountainous regions.