职称英语真题《卫生B》阅读理解

职称英语真题《卫生B》阅读理解精选 职称英语真题《卫生B》阅读理解精选 　　xx年备考已经开始，不少考生已开始准备xx年职称英语考试复习。下面是网提供应大家关于职称英语真题《卫生B》阅读理解精选，希望

职称英语真题《卫生B》阅读理解精选 职称英语真题《卫生B》阅读理解精选 xx年备考已经开始，不少考生已开始准备xx年职称英语考试 复习。下面是网提供应大家关于职称英语真题《卫生B》阅读理解 精选，希望对大家的备考有所帮助。 Women who live in the world's highest munities tend to give birth to under-weight babies,a new study suggests. These babies may grow into adults with ahigh risk of heart disease and strokes. Research has hinted that newborns in mountain munities are lighter than average. But it wasn't clear whether this is due to reduced oxygen levels at high altitude or because their mothers are under-nourished -- many people who live at high altitudes are relatively poor pared with those living lower down. To find out more, Dino Giussani and his team at Cambridge University studied the records of 400 births in Bolivia during 1976 and 1998. The babies were born in both rich and poor areas of two cities: La Paz and Santa Cruz. La Paz is the highest city in the world, at 3.65 kilometers above sea level, while Santa Cruz is much lower, at 0.44 kilometers. Sure enough, Giussani found that the average birth weight of babies in La Paz was significantly lower than in Santa Cruz. This was true in both high and low-ine