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
23
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
【C9】
选项
答案
E
解析
此处应为形容词,作表语。空后的whether表明不确定性,词库中unsure和unclear都含有“不确定”之义,但是unsure的主语一般为人,unclear的主语一般为物,根据句子的主语It可知应选unclear。
转载请注明原文地址:https://jikaoti.com/ti/VYUFFFFM
0
大学英语四级
相关试题推荐
CreativeDestructionofHigherEducationA)Highereducationisoneofthegreatsuccessesofthewelfarecountry.Whatwasonce
提到中国体育不能不说乒乓球。乒乓球为中国赢得了无数个世界冠军(championship),给国人带来无穷的喜悦与自豪感。此外,乒乓球一直是中国人最喜爱的运动之一。无论在学校、社区(residentialareas),还是公园、广场,都可以看到乒乓球和人们
Manyprivateinstitutionsofhighereducationaroundthecountryareindanger.Notallwillbesaved,andperhapsnotalldeser
Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouareinside,theorganizationalconstraints(约束)influencewa
AremarkablevarietyofinsectsliveinthisplanetMorespeciesofinsectsexistthanallotheranimalspeciestogether.Insect
Anewstudysuggeststhatthemoreteenagerswatchtelevision,themorelikelytheyaretodevelopdepressionasyoungadults.B
"Ithurtsmemorethanyou",and"Thisisforyourowngood."Thesearethe【C1】______mymotherusedtomakeyearsagowhenIhad
HalloweenA)OnOctober31st,dozensofchildrendressedincostumesknockontheirneighbors’doorsandyell"TrickorTrea
A、Hisgirlfriend.B、Hismother.C、Hiscousin.D、Histeacher.C短文最后说,Joe的表妹Carol说,Joe的首要职责是帮助家人渡过难关,亦即暂时休学。故C正确。Joe的父亲希望他退学,而他的女朋
Anewpartnerpushesouttwoclosefriendsonaverage,leavingloverswithasmallerinnercircleofpeopletheycanturntoin
随机试题
下列哪些属于常见的结果加重犯?
将830修约,修约间隔为20,修约值是840。()
()的估计值即为测量偏移。
根据《合同法》的规定,下列关于格式条款的表述中,不正确的是()。
2010年1月1日,风华股份有限公司(本题下称风华公司)以2100万元购入兰育股份有限公司(本题下称兰育公司)70%的股权(不考虑相关税费)。购入当日,兰育公司的股东权益总额为3000万元(可辨认净资产公允价值与账面价值相等),其中股本为1000万元,资本
用“道德两难法”让儿童对道德问题进行判断的心理学家是()
在人际交往中,有一种互补理论:两个人在人生观和价值观方面比较______,而在才能和兴趣方面有所不同,这样既会彼此欣赏,又能______,相处也比较舒服,做起事来也会比较和谐。填入划横线部分最恰当的一项是:
近几年来,一种从国外传人的白蝇严重危害着我国南方农作物生长。昆虫学家认为,这种白蝇是甜薯白蝇的一个变种,为了控制这种白蝇的繁殖,他们一直在寻找并人工繁殖甜薯白蝇的寄生虫。但最新的基因研究成果表明,这种白蝇不是甜薯白蝇的变种,而是与之不同的一种蝇种,称做银叶
在下列命题中,包含辩证法思想的有
A、Teachersmaybefacedwithmorepressure.B、Moststudentslikethewaysofeffectiveteaching.C、Everyteachercanraisestude
最新回复
(
0
)