首页
登录
职称英语
[originaltext] Make millions with no work! Lose 5 kg overnight! Clear your c
[originaltext] Make millions with no work! Lose 5 kg overnight! Clear your c
游客
2024-02-18
56
管理
问题
Make millions with no work! Lose 5 kg overnight! Clear your credit history! The secrets to getting hot girls! Get out of debt!
Junk email messages like these, also known as spam, are familiar to anyone with an email account. On average, each email user received 1,300 spam messages last year, and that number is expected to increase to 3,900 by the year 2007.
Junk mail is nothing new. For years, marketing groups have collected consumer information, including addresses and phone numbers, and sold them as lists to interested advertisers. But with junk mail, the high cost of mailing packages to large groups of people kept it down to a manageable level. But with email, anyone With a computer and Internet connection can now send messages around the world for free.
But it’s the people who receive spam who wind up paying. It is estimated that spam costs companies millions of dollars every year due to wasted time, connection costs and lost emails.
A British study of how diet affects the health of new mothers and their babies produced the surprise finding that vegetarian women are more likely to have girls, one of the report’s authors said yesterday.
In what is thought to be the first study of its kind, researchers at Nottingham University in central England found significant differences in the sex of babies born to vegetarian and meat and fish-eating women. They were examining the health conditions in vegetarian and non-vegetarian mothers, looking at things like hemoglobin levels, which show how much iron the mother has in her blood, and birth weights.
Altogether 5,942 pregnant women were involved in the study when they were booked in Nottingham’s City Hospital during 2001. According to the researchers, vegetarian mothers were defined as pregnant women who avoided meat and fish. Nearly five percent were vegetarian among them, a total of more than 250 women.
The birth ratio in Britain is that for every 106 boys born there are 100 girls, that’s pretty constant. In their sample group of vegetarians there were 81.5 boys born for every 100 girls.
To further test their surprise findings, they increased the sample number to what scientists called a "statistically significant" level. The study was extended for a further six months so that the sex of more babies could be looked at. The results, covering around 150 more vegetarian women, were" just about exactly the same".
The study also found that vegetarian mothers were less likely to smoke during pregnancy -- 10 percent did so, compared with 20 percent of meat-eaters.
选项
A、Vegetarian women are more likely to have girls.
B、Non-vegetarian women are more likely to have girls.
C、Vegetarian women are more likely to have boys.
D、Vegetarian women are more likely to smoke during pregnancy.
答案
A
解析
短文开头第一句A British study…produced the surprise finding that vegetarian women are more likely to have girls,故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/3461712.html
相关试题推荐
[originaltext](32)Manyanimalsrecognizetheirfoodbecausetheyseeit.So
[originaltext](32)Manyanimalsrecognizetheirfoodbecausetheyseeit.So
[originaltext]Oldagemaynotsoundexciting.Butrecentfindingsoffergoo
[originaltext](26)Womenarejoiningtogetherallovertheworldtomarkth
[originaltext](26)Womenarejoiningtogetherallovertheworldtomarkth
[originaltext](26)Womenarejoiningtogetherallovertheworldtomarkth
[originaltext]W:Hello,sir.WhatcanIdoforyou?M:Hi,Iboughtthiscasset
[originaltext]W:Hey,Mark,couldyoutellmeaboutthefirstjobyoueverhad?
[originaltext]M:Lookatallthesecreamsinyourbathroom.Doyoureallyexpec
[originaltext]M:Lookatallthesecreamsinyourbathroom.Doyoureallyexpec
随机试题
Inourthinkingactivities,suppositionalconceptexistsasthecontraryofreal
()是企业文化的内容之一,是对企业存在和发展的一种深层次定位,是企业价值观和
烟花爆竹的组成决定了它具有燃烧和爆炸的特性。燃烧是可燃物质发生强烈的氧化还原反应
隧道通风应符合的要求有( )。A.双向交通的隧道设计风速不应大于8m/s B
下列各项,属脾主运化生理功能的是( )。A.腐熟水谷 B.统摄血液 C.运
下列各项,不属《希波克托底誓言》内容的是A.为病家渫利益 B.强调医学址艺术
在Ⅰ型超敏反应中发挥重要作用的抗体类型是A.IgG B.IgA C.IgM
符合毛细胞白血病的特点为A.多见于女性B.白血病细胞表面有免疫球蛋白C.全身性淋
负责我国药品标准制定和修订的是A.国家质量技术监督部门 B.省级以上药品检验机
关于厂区总平面布置技术经济指标的说法,正确的是()A:工业企业内部绿地率应不低于
最新回复
(
0
)