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
2013-02-24
40
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【S1】______of in vitro fertilization(体外受精), or IVF. Now specialists wonder whether people who were conceived by IVF are likely to be【S2】______.
"By and large, the kids are just fine. It’s not like the kids having【S3】______arms or heads," says Carmen Sapienza, a scientist at Temple University. But none is older than their early 30s, and the vast【S4】______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【S5】______less than 2.5 kilograms than are babies conceived【S6】______. 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【S7】______, are different between IVF and non-IVF children. There’s no way to tell if that’s because of the【S8】______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【S9】______whether these gene-expression differences will translate into health differences. But it does suggest that children conceived by IVF are【S10】______on some level.
A)weigh B)technology C)help D)unsure E)unclear
F)naturally G)expressed H)procedure I)unique J)healthy
K)explained L)extra M)majority N)minority O)completely
【S10】
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/O3u7777K
0
大学英语四级
相关试题推荐
Australia’sforeignlanguageskillsareindecline,VoiceofAmericahasreported.Newfiguresshowthatonly13%ofhighschool
Thefallinthenumberofdeathsfromheartdiseasegenerally______(归因于日常饮食的改善)
A、Theyarenotimportant.B、Theyarenotyetcertain.C、Theyhavebeenprovedtobewrong.D、Theyhavecausedaserioustrouble.
A、Shewilldoasthemansuggests.B、Sheisseriouslysick.C、Shewillnottravelbyplane.D、Shewillgotherebytrain.C语义推断题
Theoceanshavealwaysservedasasinkforcarbondioxide,buttheburningoffossilfuelssincethebeginningoftheindustria
A、Mondaysareasdepressingastheyhavefeared.B、FridaysandSaturdaysareasexcitingaspredicted.C、Theirmoodalmoststays
Theteacherwasinagoodmoodand______(决定不惩罚那些上课迟到的学生).
A、Inthecitygarage.B、Inaneighboringtown.C、AttheGreenvillecenter.D、Atapublicparkinglot.A短文最后提到,Louis的车因停错了位置,被警察拖
A、Extremelygood.B、Notsomuchfun.C、Veryfoolish.D、Quitetedious.A女士和男士都曾在现场观看比赛,并觉得很精彩,比在电视机前看有趣多了,故选A。
Whatdoesthepassagemainlydiscuss?HowdidtheartistsreacttothebuildingsattheParisExhibition?
随机试题
背景:某工程项目合同工期为18个月,施工合同签订以后,施工单位编制了一份初始网络计划,如下图所示:由于该工程施工工艺的要求,实际工作中工作C、工作H和工作J需共用一台特殊履带吊装起重机械,为此需要对初始网络计划作调整。工作G
下列哪项不属于病理性充血()
中央旁小叶
焊后热处理一般选用单—高温回火或正火加高温回火处理,高温回水温度范围为( )。
下列各组设备中,全部属于输入设备的一组是()。
(2011年)下列土地应征收城镇土地使用税的有()。
下列群体性事件中,公安机关不得动用警力直接处置,但可派出便装警察或者少量着装警察到现场掌握情况,维持秩序,及时报告现场动态的有()。
下列选项中,属于承揽合同的是()。
4,13,36,(),268
由新民主主义向社会主义转变的根本政治条件是______。
最新回复
(
0
)