【单选题】__________ is a set of symbols used to assign and communicate meaning, which provi

更多“【单选题】__________ is a set of sy…”相关的问题

第1题

【单选题】A pie chart is used to represent the ______ of the whole part.

A、population

B、place

C、proportion

D、popular

点击查看答案

第2题

听力原文： Burning fallen leaves used to be standard practice across North America, but (29)most districts now ban or discourage this practice due to the air pollution it causes.

(30) What's more, because of the moisture that is usually trapped within leaves, they tend to bum slowly and thus generate large amounts of particles in the air, such as bits of dust, smoke and other solid materials. These particles can reach deep into lung tissue and cause coughing, chest pain, shortness of breath and other breathing problems.

Individual leaf fires from time to time usually don't cause any major pollution, but multiple fires in one geographic area can cause concentrations of air pollutants that exceed federal air quality standards. According to the U. S. Environmental Protection Agency (EPA), several leaf and yard waste fires burning simultaneously in a particular place can cause air pollution which equals that from factories, motor vehicles and lawn equipment.

(31) On the contrary, leaves can be made fertilizer, which is the most eco-friendly alternative to burning. Dry leaves alone will take a long time to break down, but mixing in green plant materials, such as grass, will speed up the process. Sources of nitrogen, such as livestock wastes or commercial fertilizer, will also help.

Another option is to chop leaves for use as cover for your lawn or to help protect garden and landscape plants. But before you add no more than a two-to-three-inch layer of leaves around actively growing plants, chop the leaves first so they don't prevent air from reaching roots.

(30)

A．Because burning them may cause fire accidents.

B．Because burning them may cause air pollution.

C．Because burning them may cause people out of breath.

D．Because burning them may cause water pollution.

点击查看答案

第3题

In a Bridged 1483 network, which set of commands is used to configure an ATM subinterface?（）

A.A

B.B

C.C

D.D

点击查看答案

第4题

This is one of the methods used to try and ______ to the patients that alcohol, as far as they are concerned, should be a thing of the past.

A．get by

B．get through

C．get over

D．get across

点击查看答案

第5题

根据短文，回答1~5题Human intelligence and the IQ scales used to measure it once again are becoming the focus of fiery debate． As argument rages over declining test scores in the nation’s schools，an old but explosive issue is reappearing：What is intelligence and is it determined largely by genetics?The controversy erupted more than a decade ago when some US scholars saw a racial pattern in the differing scores of students taking intelligence and college-entrance tests． Now，the racial issue is being joined by others．Teachers，psychologists，sclentlsts and lawyers argu。 over the question of whether IQ—intelligence quotient—tests actually measure mental ability,or ii士lndmgs are skewed by such factors as family background，poverty and emotional disorders-Moreover，some authorities assert that the rise in the number of college-educated Americans and their tendency to marry among themselves are creating a class of super-smart children of brainy parents—and'on the other side of the scale，a lumpenproletariat of children reflecting the supposedly inferior brainpower of their parents,Critics such as Harvard University biologist Richard C. Lewontin disagree．If mental ability were largely determined bv inheritance，he says，efforts to enhance intelligence through the betterment of both home and child-rearing environments could only be marginally effective．He comments： "Genetic deteminism could be used to justify existing social injustice as predetermined and inevitable and would render efforts made toward equalitarian goals as useless．"Supporting Lewontin in this is J．McVieker Hunt，a professor at the University of Illinois，who maintains that IQ levels can be raised significantly by exposing children at an early age to stimulating enviroments．Hunt’s studies show that early help in such areas as education and nutrition can raise a child s IQ by aD average of 30 to 35 points． At stake in the uproar over IQ is the national commitment to improve the capabilities oi the poor by investing billions of dollars annually in educational，medical and job programs．The controversy over IQ tests is reappearing because of__________． [A]the newly found racial pattern underlying students’ performance[B]the worsening students’ performance in their studies[C]the long-standing division in the definition of intelligence [D]the dubious IQ scales used to measure intelligence

点击查看答案

第6题

Protect Your Privacy When Job-hunting Online

A)Identity theft and identity fraud are terms used to refer to all types of crime in which someone wrongfullyobtains and uses another person's personal data in some way that involves fraud or deception, typically foreconomic gain.

B)The numbers associated with identity theft are beginning to add up fast these days. A recent GeneralAccounting Office report estimates that as many as 750,000 Americans are victims of identity theft every year.And that number may be low, as many people choose not to report the crime even if they know they have beenvictimized:

C)Identity theft is "an absolute epidemic", states Robert Ellis Smith, a respected author and advocate of privacy,"It's certainly picked up in the last four or five years. It's worldwide. It affects everybody, and there's very littleyou can do to prevent it and, worst of all, you can't detect it until it's probably too late."

D)Unlike your fingerprints, which are unique to you and cannot be given to someone else for their use, yourpersonal data, especially your social security number, your bank account or credit card number, your telephonecalling card number, and other valuable identifying data, can be used, if they fall into the wrong hands, topersonally profit at your expense. In the United States and Canada, for example, many people have reportedthat unauthorized persons have taken funds out of their bank or financial accounts, or, in the worst cases, taken over their identities altogether, rtmning up vast debts and committing crimes while using the victims' names. Inmany cases, a victim's losses may include not only out-of-pocket financial losses, but substantial additionalfinancial costs associated with trying to restore his reputation in the community and correcting erroneousinformation for which the criminal is responsible.

E) According to the FBI, identity theft is the number one fraud committed on the Internet. So how do job seekersprotect themselves while continuing to circulate their resumes online? The key to a successful online jobsearch is learning to manage the risks. Here are some tips for staying safe while conducting a job search on theInternet.

F)Check for a privacy policy. If you are considering posting your resume online, make sure the job search siteyou are considering has a privacy policy, like CareerBuilder.com. The policy should spell out how yourinformation will be used, stored and whether or not it will be shared. You may want to think twice aboutposting your resume on a site that automatically shares your information with others. You could be openingyourself up to unwanted calls from solicitors (推销员). When reviewing the site's privacy policy, you'll be ableto delete your resume just as easily as you posted it. You won't necessarily want your resume to remain outthere on the Internet once you land a job. Remember, the longer your resume remains posted on a job board,the more exposure, both positive and not-so-positive, it will receive.

G)Take advantages of site features. Lawful job search sites offer levels of privacy protection. Before posting yourresume, carefully consider your job search objectives and the level of risk you are willing to assume.CareerBuilder.com, for example, offers three levels of privacy from which job seekers can choose. The first isstandard posting. This option gives job seekers who post their resumes the most visibility to the broadestemployer audience possible. The second is anonymous( 匿名的) posting. This allows job seekers the samevisibility as those in the standard posting category without any of their contact information being displayed.Job seekers who wish to remain anonymous but want to share some other information may choose whichpieces of contact information to display. The third is private posting. This option allows a job seeker to post aresume without having it searched by employers. Private posting allows job seekers to quickly and easily applyfor jobs that appear on CareerBuilder.com without retyping their information.

H)Safeguard your identity. Career experts say that one of the ways job seekers can stay safe while using theIntemet to search out jobs is to conceal their identities. Replace your name on your resume with a generic (泛指的) identifier, such as "Intranet Developer Candidate", or "Experienced Marketing Representative". Youshould also consider eliminating the name and location of your current employer. Depending on your title, itmay not be all that difficult to determine who you are once the name of your company is provided. Use ageneral description of the company such as "Major auto manufacturer," or "international packaged goodssupplier." If your job title is unique, consider using the generic equivalent instead of the exact title assigned byyour employer.

I)Establish an email address for your search. Another way to protect your privacy while seeking employmentonline is to open up an email account specifically for your online job search. This will safeguard your existingemail box in the event someone you don't know gets hold of your email address and shares it with others.Using an email address specifically for your job search also eliminates the possibility that you will receiveunwelcome emails in your primary mailbox. When naming your new email address, be sure that it doesn'tcontain references to your name or other information that will give away your identity. The best solution is anemail address that is relevant to the job you are seeking such as salesmgr2004@provider.com.

J)Protect your references. If your resume contains a section with the names and contact information of yourreferences, take it out. There's no sense in safeguarding your information while sharing private contactinformation of your references.

K)Keep confidential (机密的) information confidential. Do not, under any circumstances, share your social security, driver's license, and bank account numbers or other personal information, such as race or eye color.Honest employers do not need this information with an initial application. Don't provide this even if they saythey need it in order to conduct a background check. This is one of the oldest tricks in the book--don't fallfor it.

46、Those who post their resumes online for a long time will run an increased risk of becoming victims of identity theft.

47、Robert Ellis Smith says that identity theft is spreading around the world and hard to detect beforehand.

48、Victims of identity theft may suffer additional financial losses in order to restore their reputation and correct wrong infbrmation.

49、In the US,750,000 people are estimated to become victims of identity theft each year.

50、It is a safer way to find a job online when you use an email account specifically.

51、One is supposed to learn how to manage the risks if he or she is going to seek jobs online safely.

52、Standard posting allows fullest potential audience to browse through the resumes posted online.

53、Honest employers will not ask their initial job applicants to reveal their social security account, driver's license or bank account numbers.

54、Make sure that your email address will not be named in a way that could let out your personal information.

55、Job seekers are advised to describe the company they are serving right now in a general way instead of giving an exact name.

点击查看答案

第7题

根据下列文章,请回答 6～10 题。

Text 2

Many phrases used to describe monetary policy, such as "steering the economy to a soft landing" or "a touch on the brakes", makes it sound like a precise science. Nothing could be further from the truth. The relation between interest rates and inflation is uncertain. And there are long, variable lags before policy changes have any effect on the economy. Hence the analogy that likens the conduct of monetary policy to driving a car with a blackened windscreen, a cracked rearview mirror and a faulty steering wheel.

Given all these disadvantages, central bankers seem to have had much to boast about. Average inflation in the big seven industrial economies fell to a mere 2.3% last year, close to its lowest level in 30 years,before rising slightly to 2.5% this July. This is a long way below the double-digit rates which many countries experienced in the 1970s and early 1980s.

It is also less than most forecasters has predicted. In late 1994 the panel of economists which The Economist polls each month said that America's inflation rate would average 3.5% in 1995. In fact,it fell to 2.6% in August,and is expected to average only about 3% for the year as a whole In Britain and Japan inflation is running half a percentage point below the rate predicted at the end of last year. This is no flash in the pan;over the past few years, inflation has been continually lower than expected in Britain and America.

Economists have been particularly surprised by favourable inflation figures in Britain and the United States, since conventional measures suggest that both economies, and especially that of America, have little productive slack.. America's capacity utilisation, for example, hit historically high levels earlier this year,and its jobless rate (5.6% in August) has fallen below most estimates of the natural rate of unemployment the rate below which inflation has taken off in the past.

Why has inflation proved so mild? The most thrilling explanation is, unfortunately, a little defective. Some economists argue that powerful structural changes in the world have up-ended the old economic models which were based upon the historical link between growth and inflation.

第 6 题 According to the text, making monetary policy changes______

A．is comparable to driving a car.

B．is similar to carrying out scientific work.

C．will not influence the economy immediately.

D．will have an immediate impact on the inflation rate.

点击查看答案

第8题

Discuss the various types of loots used to monitor and measure organizational performance.

点击查看答案

第9题

Icing sugar is always used to decorate the bread.

点击查看答案

【单选题】__________ is a set of symbols used to assign and communicate meaning, which provides important clues about the cultural value of the society.