Read the following article and select the best answer. Article: As most people know, in the past few years, sandstorms have swept across many cities and areas of North China, polluting the air and disturbing daily lives of human beings. People look dirty and suffer many kinds of illnesses, such as breath difficulty. The sandstorm is such a serious problem that it has not only _ the industrial and agricultural development of our country but also caused a lot of trouble to the living conditions of the Chinese people. It is expected that effective measures should be taken as soon as possible through our joint efforts to limit its occurrence. So what should we do with the frightening sandstorms? Some experts put forward practical suggestions as follows: For one thing, more funs ought to be put into tree planting and forest protection so as to keep more water resources within the surface of the earth. For another, governments of all countries should make laws on environmental protection.For example, banning the use of throw-away chopsticks and punishing illegal tree cutting. Scientists should also study and find ways to cut down the degree of its destruction and to improve the whole environment. How people look forward to sunny days with little breeze touching their faces now and forever! Nevertheless, I am fully confident that the golden days can come back so long as everyone tried his best to protect natural environment from today on. Question: How many ways do some experts put forward to fight against sandstorm? - 5 - 4 - 3 - 2
3

Read the following article and select the best answer. Article: A small dog should be _ after eating a handful M&M's, at least according to conventional wisdom. But watching "Moose", a friend's five-pound Chihuahua, race around a living room after his sweet snack makes one wonder: Is chocolate truly poisonous to dogs? Dogs and humans have similar tastes. But unlike humans, our companions experience dangerous effects from eating chocolate --it can poison them and in some cases is fatal. Chocolate's danger to dogs depends on its quality. Chocolate is processed from the bitter seeds of the cocoa tree, which contain a family of compounds known as methylxanthines . This class of substances includes caffeine and the related chemical theobromine . Chocolate contains a significant amount of theobromine and smaller amounts of caffeine. These chemicals can cause a dog's heart to race up to twice its normal rate, and some dogs may run around as if "they drank a gallon of espresso ," according to Hackett. Dogs are capable of handling some chocolate, but it depends on the animal's weight and the type of chocolate it eats. Unsweetened baking chocolate contains more than six times as much theobromine as milk chocolate, although amounts vary between cocoa beans as well as different brands of chocolate. Less than four ounces of milk chocolate is potentially fatal for Moose and other small dogs. Around every confection-centered holiday -- Valentine's Day, Easter and Christmas -- at least three or four dogs are hospitalized overnight in the animal medical center at Colorado State. But in 16 years, Hackett has seen just one dog die from chocolate poisoning, and he suspects it may have had an underlying disease that made it more exposed to chocolate's heart -racing effect. Question: It can be inferred from the passage that Hackett believes that _ . - chocolate is truly deadly to dogs - it's OK to give chocolate to a big dog - pets are usually ignored around confection-centered holidays - a healthy dog probably could survive a chocolate poisoning
a healthy dog probably could survive a chocolate poisoning

Q: Read the following article and select the best answer. Article: Wearing ties was originally the mark of Britain's most powerful classes, which made the tie itself a symbol of power and respect. And that led it to be adopted by a much larger tribe--the business tribe. You cannot wear a tie if you work with machinery. So wearing a tie became a sign that you were a man who used your brain to make a living, rather than your hands. It showed you were serious. It showed you were a professional. It meant that everyone who wanted a job in business had to wear one. It was just impossible to take seriously a man who didn't wear a piece of color1ed silk around his neck. This is how millions of people came to be wearing ties across the world. They are part of the uniform of business. "Ties offer a point of indifference," says John Milne, head of the British Guide of Tie Makers. "They give a chance to say something about their own personality." So if you happen to meet a man with a very brightly color1ed tie, there is a good chance that he is the office joker. There is also a good chance that he will be wearing brightly color1ed socks. Is there a future for ties? The signs are not promising. Tie wearing seems to be rare among the new bread of entrepreneurs in the Internet and new technology industries. Many political leaders,including British Prime Minister Tony Blair, now go without ties. This shows they are men of the people--but not the people wearing ties. Up until around 1960, it was common for men across the Western world to wear hats as part of their business uniform. That changed with the election of John F. Kennedy to the presidency of the United States. Kennedy never wore a hat in fact his nickname was"hatless Jack". Seeing that the most powerful man in the world did not have to wear a hat, millions of other men decided that they did not have to, either. Hats simply vanished across the Western world. Perhaps"tieless Tony"(UK Prime Minister Tony Blair) will have the same effect as "hatless Jack". Question: In Britain, ties were first used as a sign to show a person's _ . - personality - social position - job - favorite hobby
A: social position

Read the following article and select the best answer. Article: Just the mention of the TOEFL, GRE and GAMT exams brings a thought of long hours of dull paper work. But that idea is becoming increasingly out of date. As planned, computerized tests will begin next year which will bring a series of changes from test psychology to scoring techniques. From computer - equipped rooms, examinees will answer the questions on a computer. If they are sure about their choices, they can pass to the next question by pressing the entry "next". Then another question will be randomly selected from a vast test item bank and appear on the screen. After answering all the questions, examinees can choose the entry "quit" if they are not satisfied with their performance, or "score" if they want to see the result. Scores will be calculated immediately and appear on the screen. By that point, student's marks are official--there is no going back. Since they greatly shorten the painful waiting process-which used to be two or three months, computerized tests have won worldwide popularity. Besides, there will be no rushing to the registration offices( )for these exams. Computerized tests will be given every workday in an exam center with all three kinds of tests being held in the same room. All test takers need to do is to call the exam center and book their seats for a particular day. In addition it will become technically possible to apply new testing procedures. In the past,each examinee had the same set of test items despite differences in their ability. Under a computerized system, however, if the computer judges an answer is right, a question of a relatively difficult nature will follow. But if an examinee continues to give wrong answers and is judged as un-qualified by the computer system, he will be automatically _ the chance to go further in the test. Question: If an examinee is not satisfied with his performance _ . - he can admit defeat and give it up - he can ask the computer to give some advice - he can ask another chance within a few days - he is allowed to do it once again
he can admit defeat and give it up