These are the motives for doing it.A:reasons B:excuses C:answers D:replies
These are the motives for doing it.
A:reasons
B:excuses
C:answers
D:replies
B:excuses
C:answers
D:replies
参考解析
解析：
相关考题：
As soon as the cake is done,remove it from the oven.A: took awayB: left asideC: took offD: washed off
共用题干Influenza（流感）Influenza has been with us a long time. According to some Greek writers___1___ medical history, the outbreak of 412 B. C. was of influenza. The same has been suggested of the sickness___ 2___swept through the Greek army attacking Syracuse in 395B. C. Influenza is a disease that moves most quick-ly among people living in___ 3___ conditions,hence,it is likely to attack armies.___4___ the nineteenth century there were five widespread outbreaks of influenza. The last of the five ___5 ___in 1889 and marked the beginning of the story of influenza in our time.___ 6 ___the recent outbreak,it started in Asia.For more than forty years before that outbreak,influenza had steadily ___7___ and was be-lieved to be dying out. A new group of outbreaks was___ 8 ___by the great outbreak of 1889一 1890 and for the next quarter of a century influenza remained a constant threat.In April 1918 influenza broke out among American troops stationed in France. It quickly spread through all the___ 9___ but caused relatively few deaths. Four months later,however,a second outbreak started which ___10___ to be a killer. It killed not only the old and already sick but also healthy young adults. It ___11___ through every country in the world,only a few distant islands in the South Atlantic and the Pacific remaining___12___.It brought the life of whole countries to stop,food___13___stopped and work loss was very great.Before the great outbreak ended,it had killed at ___14 ___ 15 million people. Thereafter,there have been several great outbreaks throughout the world. It is thus___15___that influenza is a terrible infection that we have to pay more attention to.8._________A: controlledB: preventedC: reportedD: introduced
共用题干Skin CancerMelanoma（黑素瘤）,the deadliest kind of skin cancer,is now the most common cancer in__________(51) British women,the country's leading cancer organization said Wednesday.Skin cancer has__________(52) cervical（子宫颈的）cancer as the top cancer striking women in their 20s,according to the latest data from Cancer Research United Kingdom.The trend is particularly_________(53)since younger people are not generally those most susceptible （易患的）to melanoma. Rates of skin cancer are _________( 54 ) highest in people over age 75.But experts worry that increasing numbers of younger people being diagnosed with skin cancer could be the_________(55)of a dangerous trend.Women in their 20s make_________(56)a small percentage of all patients diagnosed with melanoma in Britain,but nearly a third of all cases occur in people younger than 50.Based on current numbers,Cancer Research UK predicts that melanoma will become the fourth _________(57)common cancer for men and women of all ages by 2024,and that cases will jump from about 9,000 a year to more than 15,500.Cancer experts_________(58)the rising number of skin cancer cases largely to the surge in people using tanning salons."Spending time on sun beds is just as_________(59)as staying out too long in the sun,"said Caroline Cerny of Cancer Research UK. The organization is starting a SunSmart_________(60)to warn Britons of the dangers of being too bronzed."The intensity of ultraviolet rays in some sun beds can be more than 10_________(61)stronger than themid-day sun,"Cerny said.In the United States,several states require parental approval________(62)minors can use tanning salons.Wisconsin bans people 16 and________(63)from using tanning beds,and others ban children under 14.At least 29 states have regulations governing minors'use of tanning salons.In the U.K.,Scottish politicians passed legislation banning those under 1 8 from using tanning beds, though it hasn't yet been implemented.There are no plans for________(64)in the rest of the U.K.The World Health Organization has previously recommended that tanning beds be regulated because of their potential to damage DNA in the skin.Experts said most deadly skin cancers could be________(65)if people took the proper precautions when in the sun and avoided tanning beds._________(64)A:debateB:cautionC:legislationD:approval
共用题干Going on a DietA typical person needs about 1,800 calories per day to stay alive.These calories keep your heart ______(51)and your lungs breathing.They keep your organs operating______(52)and your brain running.They also keep your body warm.A person______(53)weight because he or she takes in more calories per day than needed.The only way to lose fat is to______(54)the number of calories that you take in per day.This is the basic______(55)behind going on a diet.______(56),diets don't work for most people.They do lose weight but then_______(57)the diet and put it back.Building a sensible diet and exercise plan is the key to______(58)a consistent weight.You need to figure out how many calories you need in a day and how many you______(59)take in.The next step is to add exercise so that you can______(60)the number of calories you can consume per day.Exercise charts can show you how many calories different_______(61)of exercise can burn.Burning 250 or 500 calories per day can______(62)a big difference.You can ride an exercise bike while you are watching TV or you can_(63)the stairs instead of the elevator.Find an exercise______(64).Exercise can be a lot easier if there is someone to talk to.It's a good idea to wear firm-fitting clothes if you are on a diet.______(65)clothing acts as a reminder of what you are trying to accomplish.62._________A:have B:do C:make D:give
共用题干Life Expectancy in the Last Hundred YearsA hundred years ago,life expectancy in developed countries was about 47;in the early 21 st century,men in the United States and the United Kingdom can expect to live to about 74,women to about 80, and these______(51)are rising all the time .What has brought______(52) these changes?When we look at the life______(53)of people 100 years ago,we need to look at the greatest______(54)of the time .In the early 20th century,these were the acute and of-ten______(55)infectious diseases such as smallpox.Many children died very young from these diseases and others,and the weak and elderly were always at risk.In the______(56)world these diseases are far______(57)today,and in some cases have almost disappcarcd.A number of______(58)have led to this:improvements in sanita- tion and hygiene,the discovery and use of antibiotics,which______(59)bacterial diseases much less dangerous,and vaccinations______(60)common diseases.______(61), people's general health has improved with improvements in our general environment:cleaner air,better means of preserving food,better and warmer housing,and better understanding of nutrition.Genetically,we should all be able to live to about 85 but______(62)people do live longer today,there are still some big killers around that are preventing us from consistently reaching that age .The problems that affect people today are the more chronic illnesses,such as heart disease and strokes,and those______(63)by viruses,such as influenza and AIDS.Of course,cancer is a huge killer as well.In most cases these diseases affect______(64)people,but there are worrying trends in the developed world with problems such as obesity______(65)more heart disease and illnesses such as diabetes at younger ages.The killers today can be classed as"lifestyle diseases",which means that it may be possiblem to halt their progress.59._________A: makesB: causesC: makeD:cause
共用题干Stem Cell Therapy May Help Repair the HeartAccording to scientists in the USA,stem cell therapy may one day be able to repair the hearts of people with heart failure.Researchers at Pittsburgh University School of Medicine examined 20 patients who had severe heart failure and were going to have surgery.They injected stem cells into the parts of their hearts that were damaged.They then compared their hearts with those of people who had undergone surgery without having the stem cells injected into them(they had also suffered from severe heart failure).The patients who had had the stem cells injected had hearts that were able to pump（用泵抽运） more blood than the others.According to Professor Robert Kormos,one of the researchers,these results could revolutionize heart treatment.Although previous studies had indicated that there might be a benefit,this is the first study that has actually proved that stem cell therapy can help thefailing heart work better．All the patients in this study had hearts that could not pump blood properly.The scientists measured their ejection fraction（射血分数）.This is a measure of heart performance;you measure how much blood is being pumped out by the left ventricle（心室）.Healthy people's ejection fraction is about 55%.These patients had ejection fraction ofunder 35%. They all had by-pass surgery（搭桥手术）performed on them. Some of the patients had stem cells taken from their hip bones and injected into 25-30 sites in the damaged heart muscle.Six months later their ejection fraction rate was 46.1%while those who just had surgery but no stem cell injections averaged 37. 2%.No side effects were reported.Heart failure is a common problem all over the world.In the UK alone about 650, 000 people suffer from heart failure every year. As the number of people suffering from heart failure increases in the world in general these findings are particularly significant.Current treatments relieve the symptoms.This new stem cell therapy actually repairs the damaged muscle in the heart and has the potential of curing the disease.The control group patients regretted not having had stem cell injections.A:Right B:Wrong C:Not mentioned
共用题干Listening to BirdsongA male zebra finch chirps away to himself. Suddenly he notices a female bird nearby.He realizes he has an audience and immediately changes his song. Can the female tell the difference in his perfonnance?According to a new study,the female zebra finch knows.And she prefers the special trills he creates when he sings to her. A male zebra finch changes his song when singing to a female in ways that people can barely detect.But the female finch can tell the difference.Scientists had noticed slight variations in the songs of male zebra finches based on whether they were singing alone or whether there was a female(and potential mate)nearby.With an audience,the males sped up the pace of their songs and controlled the notes they used.For this study,researchers Sarah C .Woolley and Allison Doupe at the University of California,San Francisco decided to focus attention on the listening females,which have not been well studied in the past.In the study,Woolley and Doupe set up,a long cage with a sound speaker at each end.One broadcast the sound of a male zebra finch singing to himself,like someone singing in the shower.The other speaker broadcast a male performing for a female audience,as if he was giving a concert.Female birds were placed between the two speakers.Some of the birds had mates.Others didn't. The females shifted around a bit,and then most of them hopped over to sit beside just one speaker. All the birds that made a clear choice liked songs meant for a female audience,even if they'd never met the male.Mated females also had a chance to listen to two different performance songs,one from an unknown male,and one from their mate .They spent more time listening to the concert version of their mates' songs.This suggests that after a while,females learn to recognize-and prefer-the songs of their mates.Scientists then studied the brains of the females.They found certain areas of the brain perked up when the birds listened to the concert songs.These brain areas may be involved in recognizing and evaluating the songs,and storing the memories of them.This research deals with what's called directed communication,when the communicator,or sender,focuses the message for a specific audience.One example is the way moms speak to their babies. Mothers around the world use the same sort of high-pitched sing-song chatter,and the babies respond best to those sounds.Songbirds are one of the only other species known to learn their communication,in this case their songs. What did the researchers find in their study of female zebra finches?A: Female finches liked songs male finches sang for them.B: Female finches only liked songs male finches sang for their mates.C: Female finches liked to listen to songs from both speakers.D: Female finches chose the best male singers as their mates.
共用题干The Case of the Disappearing FingerprintsOne useful anti-cancer drug can effectively erase the whorls and other characteristic marks that give people their distinctive fingerprints. Losing______(51)could become troublesome. A case released online in a letter by Annals of Oncology indicates how big a______(52)of losing fingerprints is.Eng-Huat Tan,a Singapore-based medical doctor describes a 62-year old man who has used capecitabine to______(53)his nasopharyngeal cancer. After three years on the______(54),the patient decided to visit U.S. relatives last December. But he was stopped by U.S. customs officials______(55)4 hours after entering the country when those officials couldn't get fingerprints from the man.There were no distinctive swirly______(56)appearing from his in-dex finger.U.S.customs has been fingerprinting incoming foreign visitors for years,Tan says.Their in-dex fingers are______(57)and screened against digital files of the fingerprints of bad guys-terrorists and potential criminals that our federal guardians have been tasked with keeping mit of the country. Unfortunately,for the Singaporean travelers,one potential______(58)effect of his drug treatment is a smoothing of the tissue on the finger pads.______(59),no finger- pnnts."It is uncertain when fingerprint loss will______(60)to take place in patients who are taking capecitabine,"Tan points out. So he cautions any physicians who______(61)the drug to provide their patients with a doctor's note pointing out that their medicine may cause fingerprints to disappear.Eventually,the Singapore traveler made it into the United States.I guess the name on his passport didn't raise any red flags.But he's also now got the explanatory doctor's note-and won't leave home______(62)it.By the way,maybe the Food and Drug Administration,______(63)approved use of the drug 11 years ago,should consider______(64)its list of side effects associated with this medi-cine.The current list does note that patients may experience vomiting,stomach pain and some other side effects.But no where______(65)it mention the potential for loss of fingerprints.59._________A:. HoweverB: HenceC: MoreoverD: Furthermore
共用题干Nurse!I Want My MummyWhen a child is ill in hospital,a parent's first reaction is to be________(51)them.Most hospitals now allow parents to sleep________(52)with their child,providing a bed or sofa on the ward.But until the 1970s this _________ (53) was not only frowned upon（不被赞同）—it was actively discouraged.Staff worried that the children would be______(54)when their parents left,and so there was a blanket（通用的）ban.A concerned nurse,Pamela Hawthorn,disagreed and her study"Nurse,I Want My Mummy!"published in 1974,_________ (55 ) the face of paediatric（儿科的）nursing.Martin Johnson,a professor of nursing at the University of Salford,said that the work of_________(56) like Pamela had changed the face of patient care."Pamela's study was done against the__________(57)of a lively debate in paediatrics and psychology as to the degree women should spend with children in the outside world and the degree to which they should be allowed to visit children in__________(58).""The idea was that if mum came to__________(59)a small child in hospital the child would be upset and inconsolable（无法安慰的）for hours.""Yet the nurse noticed that if mum did not come at_________(60)the child stayed in a relatively stable state but they might be depressed.""Of course we know now that they had almost given up hope__________(61)mum was ever comingback.""To avoid a little bit of pain they said that no one should visit.""But children were alone and depressed,so Hawthorn said parents should be__________(62)to visit." Dr. Peter Carter,chief executive and general secretary of the Royal College of Nursing,said her _________( 63 ) had been seminal（开创性的）."Her research put an end to the__________(64)when parents handed their children over to strangers at the door of the hospital ward.""As a result of her work,parents are now recognized as partners in care and are offered the opportunity to stay with their children while they are in hospital,__________(65)has dramatically improved both parents'and children's experience of care."_________(57)A:fieldB:background C:circleD:history