1、Unit 4 Scientists who changed the worldWelcome to the unitIt is scientists who changed the world！【知识拓展】强调句1.What was your dream occupation in your childhood?interpreterteacherdoctorentertainerlawyerscientist2.What are your first impression of scientists?hardworkingexperiencedknowledgeablepatientThe
2、scientist is motivated primarily by curiosity and a desire for truth.Irving LangmuirWhy is motivation important for scientists?The“curiosity”means people may seek the truth actively from various reliable sources.The“truth”means true facts and scientific explanation.Irving LangmuirIrving Langmuir was
3、 the first to observe the very stable adsorbed monatomic films on tungsten and platinum filaments,and was able,after experiments with oil films on water,to formulate a general theory of adsorbed films.Langmuirs work on space charge effects and related phenomena led to many important technical develo
4、pments which have had a profound effect on later technology.In chemistry,his interest in reaction mechanism caused him to study structure and valence,and he contributed to the development of the Lewis theory of shared electrons.Do you know some stories of the two scientists?Stephen HawkingYuan Longp
5、ingYuan Longping:In 1953,he _ South-west Agricultural College.In the 1970s,he _ the first hybrid rice varieties.graduatedsucceeded in developingStephen Hawking:He _ the field of general relativity.In 1988,A Brief History of Time was published and stayed on a bestseller list for _.made major contribu
6、tion to237 weeks1.What else do you know about the two scientists in the video?2.What other great scientists do you know of?Tips:you can open your science textbook to recall your memory.1.What can we learn from these great scientists?2.Do you want to be scientist now?Diligence,perseverance,passion fo
7、r seeking truthThink about:characteristics,experience,habit一、一、根据句意并结合汉语或首字母提示填写单词。根据句意并结合汉语或首字母提示填写单词。1.I question the (明智)of giving a child so much money.2.If cancers are spotted early theres a high chance of s .3.I have promised not to r to the matter again.4.It would take him the rest of his lif
8、e to p off that loan.5.There are a lot of vitamins that are b to our health.6.You notice that your breathing has s up a bit.7.Many drugs were found through trial and e .8.He was nominated for the best actor a .9.The d of qinghaosu enabled malaria patients to survive.10.Laughter is the best m .【参考答案】
9、1.wisdom 2.survive 3.refer 4.pay 5.beneficial 6.speeded 7.error 8.award 9.discovery 10.medicine二、二、用所给词的适当形式填空。用所给词的适当形式填空。1.She was the last (survive)member of the family.2.The following day she felt (sufficient)well to go to work.3.Im older and (wisdom)after ten years in the business.4.The new reg
10、ulations will be of (beneficial)to everyone concerned.5.The notes are (intend)as an introduction to the course.6.The poor child looks more (deadly)than alive.【参考答案】1.surviving 2.sufficiently 3.wiser 4.benefit 5.intended 6.dead Some scientists claim that we humans are the only living things that are
11、conscious(有意识的)-we alone are aware that we are thinking.No one knows how consciousness works-it is one of sciences last great mysteries.All your thoughts take place in the cerebrum(大脑皮质),which is at the top of your brain,and different kinds of thought are linked to different areas,called association
12、 areas.Each half of the cerebrum has four rounded ends called lobes(脑叶)-two at the front(frontal and temporal lobes)and two at the back(occipital and parietal lobes).The frontal lobe is linked to your personality and it is where you have your bright ideas.The temporal lobe is where you hear and unde
13、rstand what people say to you.The occipital lobe is where you work out what your eyes see.The parietal lobe is where you record touch,heat and cold,and pain.The left half of the brain controls the right side of the body.The right half controls the left side.One half of the brain is always dominant(i
14、n charge).Usually,the left brain is dominant,which is why 90%of people are right-handed.1.Which part of your cerebrum is most active when you are making a telephone call?A.The frontal lobe.B.The temporal lobe.C.The occipital lobe.D.The parietal lobe.2.Which of the following statements is true?A.Ones
15、 personality has something to do with the frontal lobe.B.Bright ideas come from the parietal lobe.C.The occipital and temporal lobes are at the back of the cerebrum.D.The occipital lobe is in charge of sound.3.From the passage,we know the reason why around 10%of people are left-handed is that _.A.their frontal lobe is usually dominantB.their temporal lobe is usually dominantC.their right brain is usually dominantD.their left brain is usually dominant【阅读理解答案】1.B 2.A 3.CSearch info about your favourite scientists(famous work,experience,background info)
