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
When Louise Brown was born on 25 July 1978, she kicked off an era. The first "test tube baby" is a mother herself now, and she’s
When Louise Brown was born on 25 July 1978, she kicked off an era. The first "test tube baby" is a mother herself now, and she’s
admin
2018-04-07
62
问题
When Louise Brown was born on 25 July 1978, she kicked off an era. The first "test tube baby" is a mother herself now, and she’s been joined by millions of others born with the【C1】______of in vitro fertilization(体外受精), or IVF. Now specialists wonder whether people who were conceived by IVF are likely to be【C2】______.
"By and large, the kids are just fine. It’s not like the kids having【C3】______arms or heads," says Carmen Sapienza, a scientist at Temple University. But none is older than their early 30s, and the vast【C4】______are under the age of 20, so they haven’t had time for long-term health problems to show up.
One source of worry is that so many IVF babies have low birth weight. Children-conceived through IVF are more likely to【C5】______less than 2.5 kilograms than are babies conceived【C6】______. That could spell trouble ahead, because low-birth-weight babies often have long-term health problems. They’re more likely to be obese, to have diabetes(糖尿病)or other problems.
With that in mind, Sapienza and colleagues have looked at genes that are likely to play a role in such health problems. They found that certain DNA-patterns, which affect how genes are【C7】______, are different between IVF and non-IVF children. There’s no way to tell if that’s because of the【C8】______used to produce the IVF babies or whether the difference has something to do with the underlying infertility problem the parents had. It’s also【C9】______whether these gene-expression differences will translate into health differences. But it does suggest that children conceived by IVF are【C10】______on some level.
A)weigh E)unclear I)unique M)majority
B)technology F)naturally J)healthy N)minority
C)help G)expressed K)explained O)completely
D)unsure H)procedure L)extra
【C10】
选项
答案
I
解析
此处应为形容词。上文提到各种不确定因素,此空所在句句首用But表转折,说明由体外受精生出的小孩在某种程度上是“独一无二的”,选unique。
转载请注明原文地址:https://kaotiyun.com/show/uOa7777K
0
大学英语四级
相关试题推荐
Eatingfruitsandvegetableshasprovedhelpfulinpreventingvariouschronic(慢性的)illnesses.Doesthatmeanthemorethebetter?
Eatingfruitsandvegetableshasprovedhelpfulinpreventingvariouschronic(慢性的)illnesses.Doesthatmeanthemorethebetter?
Mirages(海市蜃楼)areproducedbyrefraction(折射)oflightwithinalayerofair.Thislayerofairresists【C1】______up,eveninafair
InastepthatshouldhelpmaketheInternetsaferforconsumers,anti-virusgiantSymanteconWednesdaywillintroduceaprotec
A、Sheneedstochewgumswhenshefeelslikeeating.B、Sheshouldexercisemoreoftentokeepherselfhealthy.C、Justforgetting
A、BeijingAmusementPark.B、TheNationalAmusementPark.C、TheInternationalSculpturePark.D、BeijingSculpturePark.C短文说:“去年夏
A、Itwasamoviewhenfirstreleased.B、Ithasbeenaroundfornearly90years.C、Itintroducedthesecondcharacterin2005.D、
A、TheinfluencefromAsiancountries.B、Thegrowingcompetitionfromforeignstudents.C、Thegrowingcompetitionforentrancein
A、Hehadoneofhislegsremoved.B、Hismotherwashurtbythechair.C、Hewasoperatedonthetoe.D、Hecomplainedaboutthech
A、Thesuspectsescapedfromthepolice.B、Thesuspectsrobbedthecarofthemother.C、Thesuspectswerelockedinthemother’s
随机试题
掷两粒骰子,出现点数之和为5的概率为()
癌痛时需要口服麻醉剂属于癌痛分级
菌痢假膜形成属急性阑尾炎属
设A是n阶矩阵,且Ak=0(k为正整数),则()。
证券公司董事会在严格遵守监管法规的基础上,根据公司()情况确定自营业务规模、可承受的风险限额等。
下列指标中,可以用来衡量风险的有()。
我国某企业在非洲一国家承包了一项基建项目,该国频繁发生恐怖袭击。施工进行过程中,由于员工忽视安全,造成了人身伤亡事故,这属于()。
阐述苏格拉底方法与孔子关于启发式教学的思想,并比较二者的异同。
非公有制经济包括个体经济、私营经济、外资经济、混合所有制经济中的非公有制成分等,是我国社会主义市场经济的重要组成部分。中共十八届三中全会报告特别指出,要激发非公有制经济活力和创造力。这表明,非公有制经济
有以下定义:inta;longb;doublex,y;则以下选项中正确的表达式是
最新回复
(
0
)