首页
登录
职称英语
When Louise Brown was born on 25 July 1978, she kicked off an era. The first
When Louise Brown was born on 25 July 1978, she kicked off an era. The first
游客
2024-01-31
24
管理
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 [br] 【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://tihaiku.com/zcyy/3409760.html
相关试题推荐
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
WhenLouiseBrownwasbornon25July1978,shekickedoffanera.Thefirst
随机试题
CollegesportsintheUnitedStatesareahugedeal.AlmostallmajorAmeric
Accordingtothepassage,subwaysareundergroundtrains,whichusuallyrun_____
[originaltext][13]Atfirst,mostAmericansdidn’tthinktherewasanythingpar
WhatwassaltusedtodoinEgyptthousandsofyearsago?[originaltext]Weh
根据非生物环境的性质可将生态系统划分为陆地、淡水、海洋等生态系统,森林、草原和荒
偏头痛的防治,哪项不正确A、避免过度疲劳和精神紧张 B、不要过饥、过饱
在2L密闭容器中,发生3A(气)+B(气)=2c(气)的反应,若最初加入A和B
“音乐课上,一名学生发出持续不断的吵闹声,张老师让他站在教室的角落里。十分钟后,
记名股票是指在()上记载股东姓名的股票。 Ⅰ.股份公司的股东名册 Ⅱ.招股说
施工单位编写的施工方案,()应组织审查,符合要求后予以签认。A.施工单位项
最新回复
(
0
)