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Babies made from three people approved i...

Babies made from three people approved in UK

Babies made from two women and one man have been approved by the UK’s fertility regulator. The historic and controversial move is to prevent children from being born with deadly genetic diseases.

Doctors in Newcastle who developed the advanced form of In Vitro Fertilization or IVF (人工授精) are expected to be the first to offer the procedure and have already appealed for donor eggs. The first such child could be born, at the earliest, by the end of 2017.

Some families have lost multiple children to incurable mitochondrial (线粒体的) diseases, which can leave people with insufficient energy to keep their heart beating.

The diseases are passed down from only the mother, so a technique using a donor egg as well as the mother’s egg and father’s sperm has been developed.

The resulting child has a tiny amount of their DNA from the donor, but the procedure is legal and reviews say it is ethical (伦理的) and scientifically ready.

“It is a decision of historic importance,” said Sally Cheshire, chairwoman of the Human Fertilisation and Embryology Authority (HFEA). “I’m sure patients will be really pleased by what we’ve decided today.”

But some scientists have questioned the ethics of the technique, saying it could open the door to genetically-modified(转基因) ‘designer’ babies.

The HFEA must approve every clinic and every patient before the procedure can take place. Three-person babies have been allowed only in cases where the risk of a child developing mitochondrial disease is very high.

Prof Mary Herbert, from the Newcastle Fertility Centre, said, “It is enormously pleasing that our many years of research in this area can finally be applied to help families affected by these devastating diseases”.

“Now that we are moving forward towards clinical treatments, we will also need donors to donate eggs for use in treatment to prevent affected women transmitting disease to their children.”

Prof Sir Doug Turnbull, the director of the Welcome Centre for Mitochondrial Research at Newcastle University, said, “We are delighted by today’s decision. We will also provide long-term follow up of any children born.”

NHS England has agreed to fund the treatment costs of the first trial of three-person IVF for those women who meet the HFEA criteria, as long as they agree to long-term follow up of their children after they are born.

1.Why is it historically important to approve babies made from three people?

A.It helps couples who lose the ability to give birth to a baby.

B.It marks a foundation stone to change babies’ appearances before birth.

C.It stops deadly genetic diseases passing down to newly-born babies.

D.It turns out to be an advanced form of In Vitro Fertilization.

2.Which of the following is TRUE about mitochondrial diseases?

A.They pass down on to babies from their parents.

B.They prevent people’s heart from functioning normally.

C.Some children infected can be cured with proper treatment.

D.Babies can be infected with them through a donor’s egg.

3.How can a clinic or a patient be approved of applying the three-person baby technique?

A.Only when the baby to be born needs it to survive.

B.Only when the patient gets financially prepared.

C.Only when the clinic gets scientifically ready.

D.Only when the technique is ethnically accepted.

4.What is the author’s attitude towards the approval of babies made from three people?

A.Supportive B.Indifferent C.Worried D.Objective

 

1.C 2.B 3.A 4.D 【解析】 本文是一篇说明文,文章介绍了英国批准由三个人生产婴儿,以此来防止儿童出生时携带致命的遗传疾病。 1.细节理解题。根据第一段中The historic and controversial move is to prevent children from being born with deadly genetic diseases.可知,批准由三个人生产婴儿具有历史意义的重要性是因为它能防止儿童出生时携带致命的遗传疾病,也就是它能阻止致命的遗传疾病传给新生儿,故选C。 2.细节理解题。根据第三段中Some families have lost multiple children to incurable mitochondrial (线粒体的) diseases, which can leave people with insufficient energy to keep their heart beating.可知,线粒体疾病导致人们没有足够的能量来维持心脏跳动,一些家庭因为这种疾病失去了很多孩子,由此可知,线粒体疾病使人的心脏无法正常工作,故选B。 3.推理判断题。根据第八段中Three-person babies have been allowed only in cases where the risk of a child developing mitochondrial disease is very high.可知,只有在儿童罹患线粒体疾病的风险非常高的情况下(只有靠这种技术才能存活),才允许三人婴儿出生,故选A。 4.推理判断题。本文为新闻报道题材,作者仅仅引用了多位该领域的专家的言论,其中既有支持这一决定的观点,也有质疑这一决定是否会默认转基因克隆人技术的发展的疑问(第7段),而作者本身的观点并未在文中具体表露,因此,作者仍站在客观的角度看待这个问题。故选D。
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