首页 > 外语类考试> 大学英语四级
题目内容 (请给出正确答案)
[主观题]

It has been discovered that______.A.H5N1 does not transmit among human beingsB.bird flu sp

It has been discovered that______.

A.H5N1 does not transmit among human beings

B.bird flu spreads only among birds

C.H5N1 is a variant of flu virus

D.bird flu adapts easily to other species

查看答案
答案
收藏
如果结果不匹配,请 联系老师 获取答案
您可能会需要:
您的账号:,可能还需要:
您的账号:
发送账号密码至手机
发送
安装优题宝APP,拍照搜题省时又省心!
更多“It has been discovered that___…”相关的问题
第1题
Which of the following about marriage is NOT mentioned in the passage? ______A.It is impor

Which of the following about marriage is NOT mentioned in the passage? ______

A.It is important to discover what makes a marriage successful.

B.Marriage has long been partly an economic need.

C.It is a fact that most people choose to get married.

D.Many people went abroad after divorce.

点击查看答案
第2题
According to the passage, the aim of the Westinghouse Science Talent Search has always bee
n ______.

A.to discover young scientific talents

B.to involve young students in scientific research

C.to promote scientific research in American high schools

D.to provide opportunities for high school juniors to present their scientific papers

点击查看答案
第3题
What did Sam discover during his visit?A.There was a great deal of interest in Sandoz's pr

What did Sam discover during his visit?

A.There was a great deal of interest in Sandoz's products, especially in the standard and range.

B.Goods produced using Sandoz's production lines would be very attractive to the population.

C.The popularity of top quality imported and domestic products has been increasing.

点击查看答案
第4题
Question 5 1. You are auditing a business, May Company for 1999 and 2000. You discover tha

Question 5

1. You are auditing a business, May Company for 1999 and 2000. You discover that May Company has adopted the following treatment of certain items in the accounts.

—In 1999, inventory valuation method was FIFO, but in 2000 LIFO method has been used, as the prices is rising.

—Insurance expense from 1 July 2000 to 1 July 2001 has been absolutely recorded in the accounts for expenses incurred.

Required:

State the fundamental accounting concept which governs each of the above two treatments:

(a)inventory valuation method

(b)insurance expense

and discuss the effect which each treatment will have on the following financial ratios:

(i)net profit margin

(ii)return on capital employed

(iii)current ratio

(iv)quick (acid test)ratio

点击查看答案
第5题
Your IDS application pages you at 3:00 a.m, and informed you that an attack occurred a
gainst your DNS server. You drive to the server site to investigate.You find no evidence of an attack, although the IDS application claims that a remote DNS server waged an attack on port 53 of your intranet DNS server.You check the logs and discover that a zone transfer has occurred.You check your zones and name resolution, and discover that all entries exist, and no unusual entries have been added to the database.What has most likely occurred?()

A.A DNS poisoning attack against your internal DNS server.

B.A denial-of-service attack against your internal DNS server.

C.A false positive generated by the IDS.

D.A malfunction of the internal name server.

点击查看答案
第6题
It is an illusion that youth is happy, an illusion of those who have lost it; but the youn
g know they are wretched, for they are full of the truthless ideals which have been instilled into them, and each time they come in contact with the real they are bruised and wounded. It looks as if they were victims of a conspiracy; for the books they read, ideal by the necessity of selection, and the conversation of their elders, who look back upon the past through a rosy haze of forgetfulness, prepare them for an unreal life. They must discover for themselves that all they have read and all they have been told are lies, lies, lies; and each discovery is another nail drivens into the body on the cross of life. The strange thing is that each one who has gone through that bitter disillusionment adds to it in his turn, unconsciously, by the power within him which is stronger than himself.

点击查看答案
第7题
No man has been more harshly judged than Machiavelli, especially in the two centuries foll
owing his death. But he has since found many able champions and the tide has turned. The prince has been termed a manual for tyrants, the effect of which has been most harmful. But were Machiavelli's doctrines really new? Did he discover them? He merely had the frankness and courage to write down what everybody was thinking and what everybody knew. He merely gives us the impressions he had received from a long and intimate intercourse with princes and the affairs of state. It was Lord Bacon who said that Machiavelli tells us what princes do, not what they ought to do. When Machiavelli takes Cassar Borgia as a model, he does not praise him as a hero at all, but merely as a prince who was capable of attaining the end in view. The life of the state was the primary object. It must be maintained. And Machiavelli has laid down the principles, based upon his study and wide experience, by which this may be accomplished. He wrote from the view-point of the politician—not of the moralist. What is good politics may be bad morals, and in fact, by a strange fatality, where morals and politics clash, the latter generally gets the upper hand. And will anyone contend that the principles set forth by Machiavelli in his Prince or his Discourses have entirely per?ished from the earth? Has diplomacy been entirely stripped of fraud and duplicity? Let anyone read the famous eighteenth chapter of The Prince:" In what Manner Princes should Keep their Faith," and he will be convinced that what was true nearly four hundred years ago, is quite as true today.

Of the remaining works of Machiavelli the most important is the History of Florence written between 1521 and 1525, and dedicated to Clement VII.This book is merely a rapid review of the MiddleAges, and as part of it the history of Florence. Machiavelli's method has been criticized for adhering at times too closely to the chroniclers of his time, and at others rejecting their testimony without apparent reason, while in its details the authority of his History is often questionable. It is the straightforward, logical narrative, which always holds the interest of the reader, that is the greatest charm of the History.

It can be inferred from the beginning of the text that

A.many people used to think highly of Machiavelli.

B.Machiavelli had been very influential among the rulers.

C.Machiavelli was widely read among his contemporaries.

D.Machiavelli has been a target of criticism throughout history.

点击查看答案
第8题
Disease can be one of the most powerful factors in checking population growth. In crowded
conditions where many individuals of a species are living close together, the spread of pathogens(病原体)from one individual to another, occurs read fly. History shows many instances where human populations, crowded together in cities, have been almost wiped out by the rapid spread of disease. Modern orchard and forestry practice recognizes this fact and the close planting of trees of the same species is avoided. Mixed forests and orchards are the recognized procedure these days.

Apart from regulating population numbers in other species, disease has probably been the greatest factor in controlling the growth of the human population. In the mid-14th century, the Black Death wiped out 25 million people in Europe a lone, while as recently as 1918 over 21 million people died in a single year as a result of the influenza epidemic. The relative stability of the human population has been upset by advances in medical science. No longer does disease regulate human population growth in many parts of the world. Medical cures have prolonged life and upset the age structure of many populations, increasing the proportion of individuals in the reproductive age group.

The decrease in distribution and numbers of some species of native birds in New Zealand-the bellbird for example-has been attributed to disease rather than predation. Indeed, there are examples to show that disease has deliberately been used to control some animal populations. In Australia, for instance, the introduction of the myxomatosis(多发粘液瘤病) virus has drastically reduced the rabbit population in many areas, although increasing resistance to the disease is be coming apparent. Attempts to introduce myxomatosis into New Zealand as a means of rabbit population control have failed, mainly because the species of flea and mosquito that transmit the disease are absent in this country.

Research is currently being carried out to discover whether selected strains of virus can be used to control pathogenic bacteria that have developed a resistance to drugs. It is hoped that the virus will parasite(寄生于)and kill the bacteria without harming the organism that the bacteria has infected.

Why is the close planting of trees of the same species avoided in modern orchards and forests?

A.Because mixed forests and orchards are the recognized procedures these days.

B.Because trees of same species may cause the spread of disease.

C.Because modern orchards and forests are more specialized.

D.Because trees planted crowdedly do not have enough room to develop their roots.

点击查看答案
第9题
Text 4No man has been more harshly judged than Machiavelli, especially in the two centurie

Text 4

No man has been more harshly judged than Machiavelli, especially in the two centuries follow-ing his death. But he has since found many able champions and the tide has turned. The prince has been termed a manual for tyrants, the effect of which has been most harmful. But were Machiavelli's doctrines really new? Did he discover them? He merely had the frankness and cour- age to write down what everybody was thinking and what everybody knew. He merely gives us the impressions he had received from a long and intimate intercourse with princes and the affairs of state. It was Lord Bacon who said that Machiavelli tells us what princes do, not what they ought to do. When Machiavelli takes Caesar Borgia as a model, he does not praise him as a hero at all, but merely as a prince who was capable of attaining the end in view. The life of the state was the prima- ry object. It must be maintained. And Machiavelli has laid down the principles, based upon his stud-y and wide experience, by which this may be accomplished. He wrote from the view-point of the politician-not of the moralist. What is good politics may be bad morals, and in fact, by a strange fatality, where morals and politics clash, the latter generally gets the upper hand. And will anyone contend that the principles set forth by Machiavelli in his Prince or his Discourses have entirely per- ished from the earth? Has diplomacy been entirely stripped of fraud and duplicity? Let anyone read the famous eighteenth chapter of The Prince:"ln what Manner Princes should Keep their Faith,"and he will be convinced that what was true nearly four hundred years ago, is quite as true today.

Of the remaining works of Machiavelli the most important is the History of Florence written be-

tween 1521 and 1525, and dedicated to Clement VII. This book is merely a rapid review of the Middle

Ages, and as part of it the history of Florence. Machiavelli's method has been criticized for adhering

at times too closely to the chroniclers of his time, and at others rejecting their testimony without ap-

parent reason, while in its details the authority of his History is often questionable.lt is the straightfor-

ward, logical narrative, which always holds the interest of the reader, that is the greatest charm of

the History.

56. It can be inferred from the beginning of the text that

[ A] many people used to think highly of Machiavelli.

[ B] Machiavelli had been very influential among the rulers.

[ C] Machiavelli was widely read among his contemporaries.

[ D] Machiavelli has been a target of criticism throughout history.

点击查看答案
第10题
The largest shark known to us, Megalodon, is extinct. Or is it? Carcharodon Megalodon, com
monly known as Megalodon, is believed to have lived between I million and 5 million years ago and thought to have been 52 feet long. It is (or was) a shark that had a jaw 7 or more feet wide. Fairly recently, there has been some speculation about whether it is extinct or just out of reach. But few people believe that Megalodon has found a home deep in the ocean.

There are many known "Living Fossils": Coelacanth, Sea Cucumbers, Sea Urchins, Lobsters, Sea Stars. The common ones like lobsters and sea urchins are not really looked on as anything amazing. They've been around for thousands of years or more, and axe easily accessible to us. What if they weren't accessible and yet still existed? We would label them extinct. The discovery of a live Coelacanth, a fish long believed extinct, challenged some scientists' long-held beliefs on extinction. There have been recent discoveries Of incredibly large squid, and deep-sea fish never before seen by scientists.

In the 1960s the U.S. Navy set up underwater microphones around the world to track Soviet submarines. The network, known as the Sound Surveillance System, still lies deep below the ocean's surface in a layer of water known as the "deep sound channel'. The temperature and pressure of the channel allow sound waves to travel undisturbed. NOAA's Acoustic Monitoring Project has been using the Sound Surveillance System to listen for changes in ocean structure like ocean currents or volcanic activity. Most of the sounds recorded are common and of no concern. One sound, identified in 1977 by U.S. Navy "spy" sensors, was odd. It was obviously a marine animal but the call was more powerful than any of the calls made by any other reported sea creature. It was too big for a whale. Could it be a deep-sea monster? One possibility was a giant squid, but no one is sure. It was named "Bloop". Could it be Megalodon? If Megalodon is still alive down in the bottom of the ocean, we may some day soon discover it. Then what? Deep sea diving will never be the same, that's for sure!

The following is commonly known EXCEPT ________.

A.Megalodon, the largest shark, is extinct

B.Megalodon is not extinct but just out of reach

C.Megalodon was 52 feet long and had a jaw 7 or more feet wide

D.Megalodnn lived between several million years ago

点击查看答案
第11题
Schooling and EducationIt is commonly believed in the United States that school is where p

Schooling and Education

It is commonly believed in the United States that school is where people go to get an education. Nevertheless, it has been said that today children interrupt their education to go to school. The distinction between schooling and education implied by this remark is important. Education is much more open-ended and all-inclusive than schooling. Education knows no bounds. It can take place anywhere, whether in the shower or in the job, whether in a kitchen or on a tractor. It includes both the formal learning that takes place in schools and the whole universe of informal learning. The agents of education can range from a revered grandparent to the people debating politics on the radio, from a child to a distinguished scientist.

Whereas schooling has a certain predictability, education quite often produces Surprises. A chance conversation with a stranger may lead a person to discover how little is known of other religions. People are engaged in education from infancy on. Education, then, is a very broad, inclusive term. It is a lifelong process, a process that starts long before the start of school, and one that should be an integral part of one's entire life. Schooling, on the other hand, is a specific, formalized process, whose general pattern varies little from one setting to the next.

Throughout a country, children arrive at school at approximately the same time, take assigned seats, are taught by an adult, use similar textbooks, do homework, take exams, and so on. The slices of reality that are to be learned, whether they are the alphabet or an understanding of the workings of government, have usually been limited by the boundaries of the subject being taught. For example, high school students know that they are not likely to find out in their classes the truth about political problems in their communities or what the newest filmmakers are experimenting with. There are definite conditions surrounding the formalized process of schooling.

There is no difference between schooling and education in the United States.

A.Right

B.Wrong

C.Not mentioned

点击查看答案
退出 登录/注册
发送账号至手机
密码将被重置
获取验证码
发送
温馨提示
该问题答案仅针对搜题卡用户开放,请点击购买搜题卡。
马上购买搜题卡
我已购买搜题卡, 登录账号 继续查看答案
重置密码
确认修改