7.British MPs (国会议员) have voted in favour of the creation of babies with DNA from two women and one man,in a historic move.The UK is now set to become the first country to introduce laws to allow the creation of babies from three people.In a free vote in the Commons,382MPs were in favour and 128against the technique that stops genetic diseases being passed from mother to child.During the debate,ministers said the technique was"light at the end of a dark tunnel"for families.
A further vote is required in the House of Lords.If everything goes ahead then the first such baby could be born next year.Supporters said it was"good news for progressive medicine"but critics say they will continue to fight against the technique that they say raises too many ethical (伦理的) and safety concerns.Estimates suggest 150three-person babies could be born each year.
Prime Minister David Cameron said:"We're not playing god here; we're just making sure that two parents who want a healthy baby can have one."The method,which was developed in Newcastle,should help women like Sharon Bernadi,from Sunderland,who lost all seven of her children to mitochondrial (线粒体的) disease.Ms Bernadi said she was"overwhelmed"by the decision.
Mitochondria are the tiny compartments (隔间) inside nearly every cell of the body that transform food into useable energy.They have their own DNA,which does not affect characteristics such as appearance. Defective mitochondria are passed down only from the mother.They can lead to brain damage,muscle wasting,heart failure and blindness.The technique uses a modified version to combine the DNA of the two parents with the healthy mitochondria of a donor woman.It results in babies with 0.1% of their DNA from the second woman and is a permanent change that would be passed down through the generations.
25.According to the passage,which of the following statements is NOT true?C
A.The new technique is intended to provide the parents a healthy baby.
B.The mitochondrial disease can lead to various fatal illnesses.
C.Britain is the first country to have created three-person babies.
D.All of Ms Bernadi's children died of a genetic disease.
26.The underlined word"defective"is closest to the meaning ofD.
A.strangely-made
B.normally developed
C.functioning perfectly
D.not functioning properly
27.It can be inferred from the passage thatC.
A.Mitochondria are inside nearly every cell that change food into useable energy
B.DNA of Mitochondria can affect a person's appearance
C.in medical science ethical factors should be taken into consideration
D.the donor woman's DNA will not be found in the three-person baby
28.Prime Minister David CameronA the creation of such babies.
A.is in favour of
B.throws doubt on
C.objects to
D.is indifferent to.
分析 本文是一篇说明文.英国国会议员通过了关于从二女一男身上提取DNA来创造婴儿的议案,英国成为了世界上首个立法允许利用三人的基因完成试管婴儿的国家.
解答 25-28 CDCA
25题答案是C.判断正误题.根据第一段中的The UK is now set to become the first country to introduce laws to allow the creation of babies from three people可知英国成为了第一个立法允许用三人的基因完成试管婴儿的国家.故选C.
26题答案是D.词义猜测题.defective 有缺陷的,不能完全适应变化的;strangely-made 制造地很奇怪的;normally-developed正常发展的;functioning perfectly 完美运转的;not functioning properly 允许不正常的.故选D.
27题答案是C.推理判断题.根据第二段中的but critics say they will continue to fight against the technique that they say raises too many ethical (伦理的) and safety concerns 但是反对者说他们将继续反对这项技术,为此他们提出了许多伦理和安全方面的担心.可知这项技术在伦理和安全方面存在一定的缺陷.故选C.
28题答案是A.细节理解题.根据第三段中的Prime Minister David Cameron said:"We're not playing god here; we're just making sure that two parents who want a healthy baby can have one首相卡梅隆说:我们并不是在挑战上帝,只是希望那些想要一个健康孩子的夫妻能够如愿.可知卡梅隆是支持这个议案的.故选A
点评 本文是政治经济类阅读理解.做这类题材阅读理解时要求考生对文章通读一遍,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据.