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the; the a; a a; the 不填; a
the finding was unexpected he was very tired. the study took longer than expected. he was surprised to find low-income families in La Paz.
Babies born to wealthy families are heaver. Women living at high altitude tend to give birth to underweight babies. Newborns in cities are lighter than average. Low-altitude babies have a high risk of heart disease in later life.
a 不填 不填；a a; the the; the
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have delivered their babies have born their babies have their babies born have their babies delivered
lack of certain nutrition. powerty of their mother. different family backgrounds. reduction of oxygen levels.
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high-altitude babies tend to have high blood pressure in later life. under-weight babies have a shorter life span. babies born to poor families lack hormones before birth. new born wealthy families have larger heads compared with their bodies.
babies born in Lance Paz are on average lighter than in Santa Cruz. people living at high altitudes tend to give birth to underweight babies. the birthweight of babies born to wealthy families is Santa Cruz. mothers in La Paz are commonly under-nourished.
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