题目

In many parts of the world, people live to a healthy old age. What is the secret of their long lives? Three things seem to be very important: fresh air, fresh food and a simple way of life. The Hunzas, people live in Himalayas, are famous all over India for their long and healthy lives. They work hard near their homes in the clean mountain area. They do not travel a long way by bus, car or train. They do not sit all day in busy offices of factories. They take more exercises and eat less food than people in the cities. They eat vegetables grown by themselves. They drink milk taken from their ow17、读图，完成下题。 我国夏季风来源示意图 夏季风①主要来自 A．太平洋                   B．印度洋                   C．大西洋                   D．北冰洋