2014年職稱英語(yǔ)(理工類)教材閱讀判斷文章及譯文9

更新時(shí)間：2015-12-10 11:50:58 來(lái)源：|0

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　　理工類-閱讀判斷　

　　Dangers Await Babies with Altitude

　　Women who live in the world’s highest communities tend to give birth to under-weight babies, a new study suggests. These babies may grow into adults with a high risk of heart disease and strokes.1

　　Research has hinted that newborns in mountain communities 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 compared 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 1997 and 1998. The babies were bom 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 birthweight of babies in La Paz was significantly lower than in Santa Cruz. This was true in both high and low-income families. Even babies bom to poor families in Santa Cruz were heavier on average than babies born to wealthy families in lofty La Paz. “We were very surprised by this result,” says Giussani.

　　The results suggest that babies born at high altitude are deprived of2 oxygen before birth. “This may trigger the release or suppression of hormones that regulate growth of the unborn child.3 ‘‘ says Giussani.

　　His team also found that high-altitude babies tended to have relatively larger heads compared with their bodies4. This is probably because a fetus starved of oxygen will send oxygenated blood to the brain in preference to the rest of the body5.

　　Giussani wants to find out if such babies have a higher risk of disease in later life. People born in La Paz might be prone to heart trouble in adulthood, for example. Low birthweight is a risk factor for coronary heart disease. And newborns with a high ratio of head size to body weight are often predisposed to high blood pressure and strokes in later life.

　　詞匯：

　　altitude 緯度，(海拔)高度 birthweight 出生體重

　　underweight 體重不足的 hormone 荷爾蒙

　　stroke 中風(fēng) coronary 冠狀的

　　hint 暗示 fetus 胚胎 under-nourished 營(yíng)養(yǎng)不足的

　　注釋：

　　1.These babies may grow into adults with a high risk of heart disease and strokes.這些嬰兒長(zhǎng)大成人后得心臟病和中風(fēng)的風(fēng)險(xiǎn)很大。

　　2.be deprived of: 被剝奪了……，缺乏……

　　3.This may trigger the release or suppression of hormones that regulate growth of the unborn child. 這可能會(huì)觸發(fā)調(diào)節(jié)未出生兒成長(zhǎng)的荷爾蒙的釋放或抑制。這里的release是名詞。

　　4.relatively larger heads compared with their bodies:相對(duì)身體來(lái)說(shuō)較大的頭部

　　5.a fetus starved of oxygen will send oxygenated blood to the brain in preference to the rest of the body: 一個(gè)缺氧的胚胎會(huì)優(yōu)先把充氧的血液輸送到腦部,然后才送到身體的其他部位。starved of 是分詞短語(yǔ),修飾fetus, in preference to 表示“優(yōu)先于……”，如:I chose to study English in preference to Russian in university.讀大學(xué)時(shí),我選了英語(yǔ),而不是俄語(yǔ)。

　　練習(xí)：

　　1.According to the passage, one of the reasons why newborns in mountain communities are underweight is that their mothers are underweight.