首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Dangers Await Babies with Altitude Women who live in the world’s highest communities tend to give birth to underweight babie
Dangers Await Babies with Altitude Women who live in the world’s highest communities tend to give birth to underweight babie
admin
2015-06-08
73
问题
Dangers Await Babies with Altitude
Women who live in the world’s highest communities tend to give birth to underweight babies, a new study suggests. These babies may grow into adults with a high risk of heart disease and strokes.
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 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 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 born 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 of oxygen before birth. "This may trigger the release or suppression of hormones that regulate growth of the unborn child," says Giussani.
His team also found that high-altitude babies tended to have relatively larger heads compared with their bodies. This is probably because a fetus starved of oxygen will send oxygenated blood to the brain in preference to the rest of the body.
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.
It can be inferred from what Giussani says in Paragraph 4 that______.
选项
A、the finding was unexpected
B、he was very tired
C、the study took longer than expected
D、he was surprised to find low-income families in La Paz
答案
A
解析
由第四段末句Giussani的话“We were very surprised by this result”可知,研究结果是出乎他们的意料的,故选A。
转载请注明原文地址:https://kaotiyun.com/show/vf1d777K
本试题收录于:
职称英语卫生类C级题库职称英语分类
0
职称英语卫生类C级
职称英语
相关试题推荐
A、正确B、错误B
Somepeoplebelievethatinternationalsportcreatesgoodwillbetweenthenationsandthatifcountriesplaygamestogetherthey
Somepeoplebelievethatinternationalsportcreatesgoodwillbetweenthenationsandthatifcountriesplaygamestogetherthey
Whenwespeakofabasichumanneed,wemeansomethingwhichisnecessarytolife,somethingthatwecannotpossiblydowithout.
Archaeological.Archaeologicalstudycoversanextremelylongspanoftimeandagreatvarietyofsubjects.Theearliestsubj
WhoisUncleSam?"UncleSam",ofcourse,standsfortheUnitedStates.Itisthenickname(绰号)ofthecountry.Itishardto
HealthInsurance(保险)MostAmericansareresponsiblefortheirownmedicalcosts.Thesecanbeextremelyhighifapersonge
Firsteditionsofcertainpopularbookscannotbeobtainedforloveormoney.
Yourplanwillcallforalotofmoney.
KnowingthatIhadbeenoutofworknow,theywereunwillingtolendmemoney.
随机试题
________,梨花一枝春带雨。
具有祛痰功效的药物是具有利尿功效的药物是
七情影响脏腑气机,喜则
血气胸患者行闭式胸腔引流术,开胸探查的指征是
舢板、木筏、浮筒在流速()时,不宜使用其进行水上作业。
我国现行的“建设工程工程量清单计价规范”(GB50500—2008)中所采用的单价是()。
【真题(初级)】直接金融借助于直接金融工具完成,下列属于直接金融工具的有()。
儿童身高和体重增长最为快速的时期是()
甲将其装有1万元现金的行李箱寄存在火车站“小件寄存处”,但在寄存时未告知内有现金,甲取包时发现该包已被人取走,甲要求寄存处赔偿。寄存处应如何赔偿甲的损失?()
联欢晚会上,小李表演了一段京剧,老张夸奖道:“小李京剧表演得那么好,他一定是个北方人。”以下哪项是老张的话不包含的意思?
最新回复
(
0
)