首页
登录
职称英语
The idea of test-tube babies may make you either delighted at the wonders of
The idea of test-tube babies may make you either delighted at the wonders of
游客
2023-12-28
25
管理
问题
The idea of test-tube babies may make you either delighted at the wonders of modem medicine or irritated while considering the moral, or legal, or technological implications of starting life in a laboratory. But if you’ve ever been pregnant yourself, one thing is certain: You wonder what it’s like to carry a test-tube baby. Are these pregnancies normal? Are the babies normal?
The earliest answers come from Australia, where a group of medical experts at the Queen Victoria Medical Center in Melbourne have taken a look at the continent’s first nine successful
invitro
pregnancies. The Australians report that the pregnancies themselves seemed to have proceeded according to plan, but at birth some unusual trends did show up. Seven of the nine babies turned out to be girls. Six of the nine were delivered by Caesarean section. And one baby, a twin, was born with a serious heart defect and a few days later developed life-threatening problems.
What does it all mean? Even the doctors don’t know for sure, because the numbers are so small. The proportion of girls to boys is high, but until there are many more test-tube babies no one will know whether that’s something that just happened to be like that or something special that happens when egg meets sperm in a test tube instead of a fallopian tube. The same thing is true of the single heart defect. It usually shows up in only 15 out of 60,000 births in that part of Australia, but the fact that it occurred in one out of nine test-tube babies does not necessarily mean that they are at special risk. One thing the doctors can explain is the high number of Caesareans. Most of the mothers were older, had long histories of fertility problems and in some cases had had surgery on the fallopian tubes, all of which made them likely candidates for Caesareans anyway.
The Australian researchers report that they are quite encouraged. All the babies are now making normal progress, even the twin with the birth defects. [br] What does the word "invitro" underlined in Paragraph 2 most probably mean?
选项
A、Normal.
B、Test-tube.
C、Built-in.
D、Formal.
答案
B
解析
invitro布活体外部的,在人造环境内。而且本文探讨的是试管婴儿,根据上下文可推断出invitro的含义。
转载请注明原文地址:https://tihaiku.com/zcyy/3311428.html
相关试题推荐
Nowadayscustomersorderandprepayonline.Theycaneithergotothestorefor
当事人一方违约后,对方应当采取措施防止损失的扩大,没有采取适当措施致使损失扩大的,不得就扩大的损失要求赔偿。Aftereitherpartyviolate
Neitherthestatenoranysubdivisionthereof,shalluseitspropertyorcredit
它已经推出了一些既不依赖英国宽松的税收政策,也不依赖海外富豪的产品。(neither…nor…)Italreadyofferssomeproducts
Theideaoftest-tubebabiesmaymakeyoueitherdelightedatthewondersof
Wearedelightedtoestablishbusinessrelationshipwithyou.A、beestablishedB、
Evidencecameupwhichspecificspeechsoundsarerecognizedbybabiesasyoung
Wearedelightedtoestablishbusinessrelationshipwithyou.A、beestablishedB、
Virtuallyeverytheoryhasbeenconcernedwitheitherthestructureorthefunct
Virtuallyeverytheoryhasbeenconcernedwitheitherthestructureorthefunct
随机试题
Ordinarypeoplearenowlackingofthescientificknowledgeaboutnutrition.A、sh
某高锰酸钾生产厂房,耐火等级为二级,其生产厂房的最大允许层数()。A.为
被称为“交响爵士乐”的是格什温的哪部作品?()A.《波吉与贝丝》 B.《一个
患儿男,10个月,人工喂养(为羊乳6个月后加米糊但未加肉类)。面色苍白3个月,近
王先生今年45岁,是某大型国有企业的销售部经理。王先生对养老保险问题知之甚少,但
仅巡检中断告警。无打印信息可能是什么故障?如何处理?
2013年第二至四季度,钢材日均产量环比增长率最高的月份是:() A.4月
供应商绩效评价指标体系中,供应指标用来考核供应商的交货表现,该指标主要涉及()。
()是在风险识别的基础上,对风险发生的可能性、后果及严重程度进行充分分析和
心理评估的常用方法,不包括A.观察法 B.会谈法 C.前瞻法 D.作品分析
最新回复
(
0
)