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1、选择性必修二 第三单元课文语法填空The future is in our genesGood afternoon,ladies and gentlemen.Thank you all for coming to this lecture. _the course of my career,I have seen many wonderful scientific developments,but_are asgame-changing as genome editing.I am full of excitement about the possibilities _this scienti
2、fic advance can bring and I hope to share my excitement _you today._many of you may already know,genes play a critical role in_(shape)our lives.Everything from the colour of our eyes to our talent for maths depends on genes.The complete set of genes inside a cell or any living being is called a geno
3、me.Our own personal genome carries all the information_(need)to make us grow and develop.It also contains information_ helps determine our lifespan and affects our chances of _(contract)certain diseases.Some people,for example,carry a gene that makes them more likely_(catch)a certain virus or develo
4、p a particular form of cancer.Geneticists_(try)to identify which genes relate to which diseases,_they believe genome editing is an effective means of disease treatment and_(prevent).It allows_(gene)to make changes to the genome by correcting,adding,deleting or replacing specific parts of the genetic
5、 material.In the near future,geneticists hope to apply this technology_(treat)a wide range of health problems.Soon we may be able to use such treatments to restore a blind persons vision or give someone who was born deaf an excellent sense of hearing.Ultimately,this new technology might even make it
6、 possible to prevent diseasesever developing by correcting_(normal)genes early on.Genome editing,_(serve)as a new weapon in the fight against diseases,will lead to a fundamental change in our approach_ health care.As the technology continues to develop _a fast pace,_questions arise about_to use it a
7、ppropriately.Should we restrict our use of this technology _the treatment and prevention of diseases?Should we prohibit geneticists_(use)it to enhance healthy bodies?One day soon we will be able to use genome editing to increase the human resistance_ colds and flus,to make people_ (tall),to help the
8、ir muscles develop faster,to_(sharp)all of their senses or to make them more intelligent.We will be able to select specific characteristics for children before they are born,_ (create)some have called designer babies.However,is this a good thing?What consequences might it have?Philosophers,geneticis
9、ts and government officials have all started to wrestle_ such moral issues.We have to figure_how to keep the technology from running wild.This means_(put)appropriate controls_ place to make sure that genome editing will work_ our advantage. _them,genome editing could be as dangerous as a car out of
10、control.There is still much_(explore)and debated on the subject of genome editing. _the public argument over this technology,its possibilities have been creating much excitement_the entire medical community and _. _doubt,genome editing is one of the greatest_(innovate)in the history of science.Thank
11、 you for listening.Acupuncture:magic needlesOne of the most famous Chinese medical treatments is the art ofmagic needles,or Chinese acupuncture.It was developed long ago,perhaps as early as 2000 BCE.There is evidence_acupuncture dates back _the Stone Age,s_tone tools called bian were used to press a
12、reas of the body._acupuncture developed,the simple bian stones were replaced by stone needles.Eventually,metal needles began to appear and took place of stone needles.These solid needles are made of different metals,_gold and silver.Some acupuncturists today still use gold and silver needles,but the
13、_(major)have now switched_ stainless steel ones.In addition to the changes in material,the shapes of the needles have also changed_time._(origin),there were nine different kinds of needles,with variations _shape.Nowadays,the fine sharp needles _measure usually between 15 and 75 millimetres_ length a
14、re still used._most of the others have been replaced by_(complex)medical instruments.So what happens during a visit_ the acupuncture clinic?First,the_(acupuncture) examines the patient,_(look)at the patients skin and tongue,listening to the sound of hisor her voice and breathing,smelling his or her
15、breath.Then the acupuncturist asks some questions about the patients condition and feels his or her pulse.This is a_ (particular) important step according to the energy theory behind acupuncture.The acupuncturist can check the pulse in three positions_ each wrist,and every one of them is connected w
16、ith a major body organ.By checking all the positions,the acupuncturist can find out_energy channel does not have enough energy.According to the results of the check-up,the acupuncturist then selects certain points on the body_(call)acupuncture points.Needles _(push)into the skin at these points so t
17、hat a health problem can be treated.Up to now,more than 360 acupuncture points_(identify),each_(link)to a different part of the body.Sometimes the needles are pushed into points near the body part_(affect)by a disease,and sometimes into points that are not so close to it.Over the years,acupuncture h
18、as been used to treat a wide_(vary)of health problems,_(include)severe pains,blood pressure issues,stomach_(comfort),sport injuriesand weight problems.And it has been used to treat more than just physical problems-acupuncturists have discovered that the treatment helps with mental problems like depr
19、ession and anxiety too.Acupuncture has also_(apply)to treat people_ abuse alcohol,tobacco or drugs._acupuncture actually works is not clearly understood.For example,there are differenttheories _(try)to explain how it eases pain,but no agreement_(reach).One theory_(explain)this phenomenon suggests th
20、at acupuncture blocks pain signals_ reaching the brain.Another theory relates acupuncture _the production of a substance in the body which can reduce pain._the _(certain)about its medical basis,acupuncture has become a popular form of treatment.As a unique_ (contribute)of traditional Chinese medicin
21、e,acupuncture spread to many other Asian countries,such as Japan,as early as the 6th century.It was introduced to the West around the 16th century.In 2010 acupuncture was included in the UNESCO Intangible Cultural Heritage List(联合国教科文组织非物质文化遗产名录).Today，acupuncture is recognized as a symbol of traditional Chinese culture and has come into widespread use around the world.The World Health Organization recommends acupuncture_ a good treatment for over 100 medical problems. _doubts about its safety have gradually disappeared,interest continues to grow.