首页
登录
职称英语
Henry III didn’t know much about biology. He went through six wives back in
Henry III didn’t know much about biology. He went through six wives back in
游客
2023-06-24
46
管理
问题
Henry III didn’t know much about biology. He went through six wives back in the 1500s, looking for one who could bear him a son. Scientists now know that it’s the father’s sperm, not the mother’s egg, which determines whether a baby is a boy or a girl. And last week researchers at the Genetics and IVF Institute, a private fertility (生育能力) center in Virginia, announced a new technique that will allow parents to choose the sex of their baby-to-be, before it has even been conceived. The scientist used a tiny laser detector to measure the DNA in millions of sperm cells as they pass single file through a narrow tube, like cattle being herded through a corral (牲口栏). In a study published last week, "girl sperm," which has more DNA—the genetic material—in each cell, was collected, while "boy sperm" was discarded. And when purified girl sperm was used to impregnate (使受孕) a group of mothers, 15 of 17 resulting babies turned out to be girls.
The researchers say that "sex selection" can also double a mother’s chance of having a son and can be used to avoid genetic diseases that affect only one gender, such as hemophilia (血友病). But some experts, like New York University fertility specialist Dr. Jamie Grifo, worry that sex selection could lead to a kind of in uteri (子宫) discrimination, especially in cultures where sons are considered superior to daughters. "It’s valuing one gender over another," Grifo says. "I don’t think that’s something we should be doing." So far, patients at the institute have been asking for both boys and girls, in order to "balance" their families. And some ethics experts say that’s fine, as long as parents are just looking for a little gender variety. "If you have three boys, and you want a girl," says University of Texas reproductive-law professor John Robertson, "that’s not gender bias at all." [br] It can be concluded from the passage that the author’s attitude toward "sex selection" is _____.
选项
A、negative
B、positive
C、neutral
D、favorable
答案
C
解析
观点态度题。文章第2段中作者给出了一些反对者和赞成者的观点,但是没有加以评论,可以看出作者的态度是中立的,故选项C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2780029.html
相关试题推荐
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
Accordingtoarecentstudy,theideaofagingmightlookdifferentthrought
Accordingtoarecentstudy,theideaofagingmightlookdifferentthrought
Accordingtoarecentstudy,theideaofagingmightlookdifferentthrought
TopicLearningThroughTheoryorPractice?Forthispart,youareallowed
【B1】[br]【B4】A、throughB、intoC、aboutD、onA动词与介词搭配:“经过”(passthrough)一系列睡眠阶段;
【B1】[br]【B20】A、fromB、throughC、uponD、ontoA介词与动词的搭配:buildAfromB表示“以B为原料建造
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
随机试题
WhichofthefollowingstatementsabouttherestaurantnewsletterisCORRECT?[b
【B1】[br]【B8】将life改成living。livingcosts表示“生活开支”。life作前置修饰语时一般表示与生命、终身等有关的含义,作“生
IfShakira,aColombianpopstar,marriesherboyfriend,theSpanishnationa
[originaltext]W:Howdoyoufindyournewapartment?M:Well,it’squitenicere
[originaltext]Formanyyears,officialsoftheNationalInstitutesofHealt
下列关于撰写出版消息的说法,正确的是()。A.要用确凿可靠的事实说话 B.出
离心泵装置的工况有时可用闸阀来调节,也就是通过改变水泵出水阀门的开启度进行调节。
属于中度肥胖症A.体重超过同性别、同身高正常儿均值50% B.体重超过同性别、
根据《招标投标法》的规定,投标人不得以低于成本的报价竞标,这里对不得低于成本的理
期货公司变更注册资本且调整股权结构,国务院期货监督管理机构应当自受理申请之日起(
最新回复
(
0
)