Read the following article and select the best answer. Article: Scientists from the University of East Anglia have identified four new man-made gases that are contributing to the damage to the ozone layer. Two of the gases are accumulating at a rate that is causing concern among researchers. Worries over the growing ozone hole have seen the production of chlorofluorocarbon (CFC) gases restricted since the mid 1980s. But the precise origin of these new, similar substances remains a mystery. Lying in the atmosphere, the ozone layer plays a critical role in blocking harmful UV rays, which cause cancers in humans and reproductive problems in animals. Scientists from the British Antarctic Survey were the first to discover a huge "hole" in the ozone over Antarctica in 1985. The evidence quickly pointed to CFC gases, which were invented in the 1920s, and were widely used in refrigeration. Extraordinarily, global action was rapidly agreed to deal with CFCs and the Montreal Protocol to limit these substances came into being in 1987. A total global ban on production came into force in 2010. Now, the newly discovered four new gases can destroy ozone and are getting into the atmosphere from as yet unidentified sources. Three of the gases are CFCs and one is a hydrochlorofluorocarbon (HCFC), which can also damage ozone. The research has shown that four gases were not around in the atmosphere at all until the 1960s, which suggests they are man-made. The scientists discovered the gases by analyzing polar snow pack. Air from this snow is a natural archive of what was in the atmosphere up t0 100 years ago. The researchers also looked at modern air samples, collected at remote Cape Grim in Tasmania. They estimate that about 74,000 tonnes of these gases have been released into the atmosphere. Two of the gases are accumulating at significant rates. However, they don't know where the new gases are being released from and this should be investigated. Possible sources include chemicals for insecticide production and solvents for cleaning electronic... Question: What do we know about the newly discovered gases? - Some are surely produced by the development of agriculture. - The CFCs will have a long impact once they are released. - They gather together in the atmosphere at a medium speed. - Their amounts are not large enough to cause damage to us.
The CFCs will have a long impact once they are released.

(Question)
Read the following article and select the best answer. Article: I'm a speed reader. Have been since I was a teen. Mother worked for the continuing education department of a university, and they were offering a class on speed reading and needed one more person to fill out the class. I became that one person. The class met for only an hour or two for a few weeks, but when the goal of a class is speed, you don't need to meet for long. The instructor said to make our eyes go across the lines of words as fast as they could and not to be concerned about what the words meant. I read Animal Farm in 10 ten minutes. Cover to cover. The instructor asked what the book was about. I said I didn't know, but if I had to guess I'd say it was about animals on a farm. He looked displeased. I've been speed reading ever since. I can't stop and I can't slow down. Today, for example, I plan on reading Churchill's History of the English Speaking Peoples over lunch. I hope it's more memorable than Animal Farm. As a result of all this speed-reading, I often experience a delay between what I think I read and what something actually says. The other day I passed by a mall with a large sign that said "Auto Theft Sale". I thought how efficient it was for auto thieves to simply sell all the stole cars in a big tent at the mall. A half-mile later it dawned on me that the sign had said "Auto Tent Sale". Every time I drive through a construction zone, I gasp . The sign says: "Hit a Worker $10, 000 (about 62,000 yuan)." It reads like they're offering a reward. Of course, it's not an offer. It's just that my eyes rarely take in the last line that says, "Fine." It's a $10, 000 fine if you hit a worker. Someone really needs to rephrase that one. Speed reading has bitten me on the backside more than once. Especially as a writer. Just ask any of my editors. Question: The author tends to prove that there is always a delay in her understanding after speed reading by _ . - making comparisons - analyzing cause and effect - giving examples - drawing a conclusion
(Answer)
giving examples

Ques: Read the following article and select the best answer. Article: Though "nanometer" is now a fashionable term all over the world,few people know exactly what it is.It has become a new favorite of manufacturers and sellers in recent years.Many "high-tech" products bearing the name "nano" have entered the market,bringing more mysterious feeling to surprised consumers. Nanometer is a very small length unit of measure,and is very small.One millimeter is 1000 micrometers,and one micrometer is 1000 nanometers.That is,one nanometer is one billionth of a meter.Nano materials are solid materials composed of particles or crystallites of less than 100 nanometer in size.Then,is a cup made of nano material really any different from an ordinary cup in function as far as how it works? Are nano cups really so wonderful?A reporter went to the Institute of Nanomedicine,which is the first such institute of such a sort in the world and the only one in China,specializing in researching the investigation of the application of nano technology into medicine. Ji(director Institute of Nanomedicine): A water molecule is composed of 2 hydrogen atoms and 1 oxygen atom.It can be alterchanged only by special manipulation of the atoms.The material constituting the cup can have a nanometer particles size of the nano level.But it cannot change the chemical and physical properties of the water contained in it.The water in the cup is still water.When people drink it,it will produce no special effect on human body. Prof.Ji told the reporter,so far,the investigation of nano materials is still confined in the laboratory.No commercial micro products can be produced yet.With the present level of science and technology,the time of everyday goods age of daily use articles made of nanometer materials is still years away. The commodities labeled with nano marks in the market now are only traditional products coated with a thin layer of nanometer material,which makes them _ . Prof.Ji explained that nano cup is a real cup.It can also be included in the list of nano products in a certain sense.But the nano cup has not... Question: Which of the following shows the right relationship? - nanometer<millimeter<micrometer<meter - nanometer<micrometer<millimeter<meter - micrometer<millimeter<nanometer<meter - millimeter<micrometer<nanometer<meter
Ans: nanometer<micrometer<millimeter<meter

Ques:Read the following article and select the best answer. Article: The fast development of modern technology has not only provided people with more income, but also enable them to enjoy long weekends and holidays. Never before have so many people traveled to so many different parts of the world and, with the help of fast, comfortable forms of modern transport, more and more people are tempted to leave their homes to see more of the world. It seems as if there are travelers everywhere. People travel because traveling benefits them in a number of ways. First, it enables them to get much pleasure from sight-seeing and photo-taking. Second, traveling makes them fully relaxed and ready to get back to work happily. Third, it offers them an opportunity to visit old friends and make new friends as well. Finally, it allows them to see different customs, learn new things, gain new experience and enables them to come back with a broader mind. With so many advantages to traveling, I think people should be encouraged to travel from time to time, especially on holidays, if their pocket and health permit. Question: According to the passage, with the fast development of modern technology, what can people do? - People can enjoy long weekends and holidays - People have less money - people can do more shopping - People become lazy

Ans:
People can enjoy long weekends and holidays