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
2024-01-30
14
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/3407748.html
相关试题推荐
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
Sixyearsago,aMiamiwomanwalkingthroughthehallofanofficebuilding
Sixyearsago,aMiamiwomanwalkingthroughthehallofanofficebuilding
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
OlderAmericansareheadingintoandthroughretirementwithaboatload(船的载货
OlderAmericansareheadingintoandthroughretirementwithaboatload(船的载货
OlderAmericansareheadingintoandthroughretirementwithaboatload(船的载货
OlderAmericansareheadingintoandthroughretirementwithaboatload(船的载货
OlderAmericansareheadingintoandthroughretirementwithaboatload(船的载货
随机试题
AlthoughNapoleon’sarmyenteredRussiawithfarmoresuppliesthantheyhadin
甲公司有一注册商标,其有效期将于1997年6月1日届满,该公司需要继续使用此标,
胰腺钩突为胰头组成部分,它位于哪两条血管中间A.肠系膜上动脉和下腔静脉 B.肠
患者,女性,35岁。间歇双肾区绞痛半年。尿检RBC15个/HP。B超示右肾中度积
学生在学习正方形、长方形、三角形时已形成了轴对称图形概念,在学习圆时,学生立即就
下列关于首次公开发行股票审核过程中有关事项的说法,错误的是()。A.首发公开发行
运输麻醉药品和第一类精神药品的运输证明有效期为A.5年 B.4年 C.
如何加快推进以改善民生为重点的社会建设?
下列观点,属于维果茨基提出的有A.心理发展的工具中介说 B.心理发展的社会起源
()是指评估工作中所采用的定性和定量分析方法,必须符合客观实际,体现事
最新回复
(
0
)