HTTP/1.1 200 OK Cache-Control: no-cache, private Content-Type: text/html; charset=UTF-8 Date: Sat, 05 Dec 2020 08:21:22 GMT 三级高血压

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This week highlights

It's a date!

Our calculator can determine your due date based on the date of your last menstrual cycle or the date of conception.

The embryonic stage begins

虽然这个心脏太虚弱,不能真的输送血液,但是这种细胞组织在修复受伤的心脏肌肉方面具有巨大潜力。
2016年,我们看到很多新设备加入互联网(不幸的是,我们也看到他们被黑客打倒了大片)。从家用电器到服装,公司很想出售一些能使你的生活“智能化”的产品,但有时反而会适得其反。让我们来回顾在过去的一年里出现的一些最荒谬和最无用的互联网连接设备。

Consider carrier screening

It's a simple blood or saliva test to see whether your baby is at risk for any genetic disorders, such as cystic fibrosis or sickle cell disease.

36 weeks to go!

You're in your first month

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Baby development at 4 weeks

Your little embryo

我祖母最喜欢的一首诗是威廉o埃内斯特o亨利的《不可征服》(Invictus)。我父亲把这首诗挂在厨房墙壁上,所以在成长过程中,我每天都会读到它:“我,是我命运的主宰。我,是我灵魂的统帅。”我能为每个人,特别是初入职场者提供的最好建议,就是欣然接受你作为命运主宰的角色。当机会出现时,抓住机会并敢于说“Yes!”
"Overall this ranking of Asia's best 300 universities proves what a dynamic, diverse and competitive higher education region the continent is becoming -- and China is a key part of that development," said Baty.
胡润在接受路透社采访时表示:“这是一种新型的财富创造方式。”他还表示,中国经济正在缓慢下行,中国必须适应这种方式。
While at least four engines tend to repeat from one year’s 10 best list to the next, only two of last year’s powerplants remain recognized for 2014, the Honda Accord’s peppy and fuel-efficient 3.5-liter V6 and the powerful supercharged 3.0-liter V6 featured in the Audi S5.

embryo made up of hypoblast and epiblast
Your baby at 4 weeks Tap the plus for more details
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Your baby is about the size of a poppy seed

poppy seed

Primitive placenta

The pace of Japanese production rose at a brisk clip during the month of October, giving policymakers hope - if not more mixed messages - about the strength of the Japanese economy.
凭借这场胜利,金州勇士队追平了由1957-1958赛季的波士顿凯尔特人队创造的卫冕冠军赛季开局14连胜纪录。而勇士队也是成为在NBA历史上,仅有的五只以14胜0负开局的球队。接下来,他们将会作客丹佛,力争在周日将纪录继续保持下去。
Upgrades to the country's industrial structure in which labor-intensive industries are being moved out of metropolitan areas contributed greatly to the demographic change, Peng Xizhe, dean of the School of Social Development and Public Policy at Shanghai-based Fudan University, told the Global Times on Tuesday.

embryo in uterus at 4 weeks
Your body at 4 weeks Tap the plus for more details

Amniotic sac and yolk sac

“As we work to keep and attract more young professionals and job creators, we appreciate every young person who is engaged and invested in our state.”
The invulnerable singer broadened into a wider emotional palette – musical too, with guitars and brass lacing through synthetic beats and dub effects. It could recall art-rock godmother Kate Bush (see the single "Green Light").

See what fraternal twins look like in the womb this week.

Pregnancy symptoms during week 4

No symptoms?

Don't worry. Many women don't feel anything yet this week. In fact, most early pregnancy symptoms don't start until about 6 weeks.

Tender, swollen breasts

Breast tenderness can be one of the earliest signs of pregnancy. It usually starts around 4 to 6 weeks and lasts through the first trimester.

Fatigue

For many women, exhaustion is one of the first signs of pregnancy. But other women hardly seem to slow down at all.

Nausea or vomiting

Morning sickness can strike at any time of day. It usually starts around 6 weeks of pregnancy but can begin as early as 4 weeks. Some women have cramping as well.

俄罗斯水泥缺口大,政府鼓励多办建材工厂

If you've been charting your temperature and it stays elevated for 18 days in a row, you're probably pregnant.

Pregnancy checklist at 4 weeks pregnant

Take a pregnancy test

If you haven't already, you should be able to find out whether you're pregnant. For the most accurate results, wait until a few days after you miss your period before you take a pregnancy test.

Make a prenatal appointment

If the test is positive, call your doctor or midwife and schedule your first prenatal appointment. In the meantime, you can calculate your due date, but remember that it's just an estimate. You're just as likely to go into labor any day during the two weeks before or after.

乌龙:三棵树被误入“失信企业”名单 现已获得更正

If you've been trying to conceive with no success for a year or more (or for six months if you're over 35), talk to your healthcare provider about a workup for you and your partner to spot possible fertility problems.

4 weeks pregnant bellies

This week's video

Show sources

ACOG. 2015. FAQ156. Prenatal development: How your baby grows during pregnancy. American College of Obstetricians and Gynecologists. authorization [Accessed May 2019]

FDA. 2014. Home Use Tests: Pregnancy. U.S. Food and Drug Administration. 清华大学公共管理学院主任杨燕绥表示,这4万亿元养老金结余很多都在个人账户里面,现收现付的养老保险制度遇到了抚养比的挑战。 [Accessed May 2019]

March of Dimes. 2015. Prescription drugs, over-the-counter drugs, supplements and herbal products. Goldie Blox是一家玩具公司,使命是重新定义玩具商店中的“粉红走道”。在科学、技术、工程和数学(STEM)教育和职业领域,男性数量要大大多于女性,大部分女孩往往在八岁前就对这些领域失去了兴趣。Goldie Blox所设计的玩具则通过吸引女孩发展强大的口头及故事讲述能力的方式——同时仍提供机会来发展日后可转化成对工程学兴趣的技能——来鼓励和启发未来的工程师们。说到机会,一家玩具初创企业如何能在和一开始就统治着玩具行业的大公司的抗衡中脱颖而出呢?Goldie Blox走出了明智的一步:最近,该公司发布了一段视频,采用了Beastie Boys的歌曲《女孩们》(Girls)做背景音乐,该视频得到了病毒式传播。尽管这段视频最终被撤下,但Goldie Blox在提高公众对让更多女性和女孩对STEM产生兴趣——以及对Goldie Blox玩具——的认知上,做了一份相当不错的工作。 [Accessed May 2019]

Mayo Clinic. 2015. Prenatal vitamins: Why they matter, how to choose. Most common passwords of 2013: [Accessed May 2019]

MedlinePlus (ADAM). 2015. Fetal development. 环保风暴再起,对LED行业影响几何? [Accessed May 2019]

Kate Marple is an award-winning journalist with more than 25 years of experience writing and editing health content.   
 
 
 
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