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
2024-01-30
31
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] 【C6】
选项
答案
F
解析
此处应为副词,修饰conceived。此空所在句用more likely...than…表比较,从语义上看,与through IVF(通过体外受精而怀孕)作比较的应该是“自然怀孕”,不难选择naturally。
转载请注明原文地址:https://tihaiku.com/zcyy/3405701.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
Thecompanyissmallbutpromising.______I’lltakethejob.A、InsomecasesB、In
外观设计专利的保护期限是()年。A.5 B.10 C.20 D.50
20世纪50年代,科学家发现,细胞膜中存在着某种只允许水分子出入的通道,人们称之
在我国,教师职业道德是整个社会主义道德体系的重要组成部分,是社会主义、共产主义道
共用题干 第二篇NeedforEmphasisonTreatmentA
2020年我国农产品贸易额2468.3亿美元,同比增8.0%。其中,出口额同比减
某市市场监督管理局对中央商场实行执法检查时,认定商场销售假烟、假酒和其他伪劣品,
关于犯罪分子可以适用死刑缓期执行限制减刑的案件,下列选项正确的有()A.虚开增
银行承兑汇票一级市场主要涉及以下行为()。A.出票 B.承兑 C.贴现 D
关于性轴的描述,下列哪项错误A.FSH、LH在排卵前l~2日出现高峰 B.孕激
最新回复
(
0
)