Every immigrant leads a double life. Every immigrant has a double identity and a double vision, being suspended between an old and a new home, an old and new self. The very notion of a new home, of course, is in a sense as impossible as the notion of new parents. Parents are who they are; home is what it is. Yet home, like parentage, must be legitimized through love; otherwise, it is only a fact of geography or biology. Most immigrants to America found their love of their old homes betrayed: they did not really abandon their countries; their countries abandoned them. In America, they found the possibility of a new love, the chance to nurture new selves. Not uniformly, not without exceptions. Every generation has its Know-Nothing movement. Its understandable fear and hatred of alien invasion is as true today as it always was, but in spite of all this, the American attitude remains unique. Throughout history, exile has been a disaster; America turned it into a triumph and placed its immigrants in the center of a national epic. The epic is possible because America is an idea as much as it is a country. America has nothing to do with loyalty to a dynasty and very little to do with loyalty to particular place, but everything to do with loyalty to a set of principles. To immigrants, those principles are especially real because so often they were absent or violated in their native lands. It was no accident in the '60 and '70s, when alienation was in flower, that it often seemed to be "native" Americans who felt alienated, while aliens or the children of aliens upheld the native values. The immigrant's double vision results in a special, somewhat skewed perspective on America that can mislead but that can also find revelation in the things that to native Americans are obvious. Psychiatrist Robert Coles speaks of those "who straddle worlds and make of that very experience a new world." "Home is where you are happy." Sentimental, perhaps, and certainly not conventionally patriotic, but is appropriate for a country... What's the result of American's unique attitude toward immigrants? A) Immigrants have played an important role in America's history. B) Immigrants have endured more sufferings than those in other countries. C) Immigrants have been a disaster to America's development. D) Immigrants have posed fear and hatred on America.
A

The largest outbreak of the deadly disease Ebola was caused by an infected bat biting a toddler, say a group of international researchers. The 17-strong team of European and African tropical disease researchers, ecologists and anthropologists have spent three weeks investigating the outbreak of the disease in Guinea, Liberia, Ivory Coast and Nigeria. The researchers captured the bats and other creatures near the village of Meliandoua in remote eastern Guinea, where the disease began in December 2013. The boy was bitten and passed the infection on to his mother and both died within a week. The disease was then spread far and wide by the people who came to the funeral. Most of the previous outbreaks have been caused by meat from dead infected animals collected by hunters who then sell it on. Fruit bats, however, are widely eaten in rural West Africa. The team, led by epidemiologist Herr Leendertz, a disease ecologist at the Robert Koch Institute in Berlin, are expected to publish their results in a major journal soon. Herr Leendertz's team believe that an infected straw-colored fruit bat brought the disease to Guinea. The mammals are known to travel long distances and usually settle in forests near cities. Herr Leendertz said, " The evidence is not 100 percent and we can only say that it is possible. They can travel far in one night. I don't think an individual bat or colony migrated all the way from Congo or Gabon to West Africa. These big colonies are connected. There is a possibility for the virus to mix between colonies. The bats share the same fruit. It is likely not to have even been one species of bat. The virus may jump from one species to another." If the bat theory is confirmed, the locals would try to destroy the colonies, which, Herr Leendertz says, would be an ecological disaster, because bats pollinate plants and kill insects. And bat hunts would also only increase human contact with potentially infected animals. If the bat theory is confirmed, _ . A) the disease Ebola will be controlled B) all the fruit bats in Africa would be killed C) plants would not be pollinated in the future D) the ecosystem in Africa might lose its balance
D

A young father was visiting an old neighbor.They were standing in the old man's garden,and talking about children.The young man said,"How strict should parents be with their children?" The old man pointed to a string between a big strong tree and a thin young one. "Please untie that string,"he said.The young man untied it,and the young tree bent over to one side. "Now tie it again, please."said the old man."But first pull the string tight so that the young tree is straight again.'' The young man did so.Then the old man said,"There,it is the same with children.You must be strict with them, but sometimes you must untie the string to see how they are getting on.If they are not yet able to stand alone,you must tie the string tight again.But when you find that they are ready to stand alone,you can take the string away.'' We learn that the big strong tree and the thin young one are like _ . A) the young father and the old neighbor B) parents and their children C) the young and the old D) the old neighbor and the children of the young
B

You are careful with your money: you collect all kinds of coupons; look for group-buy deals if you eat out; you don't buy clothes unless in a sale. Does all this make you a wise consumer? Let's do the math first: you walk into a coffee shop and see two deals for a cup of coffee. The first deal offers 33 percent extra coffee. The second takes 33 percent off the regular price. What's the better deal? Well, they are about the same, you'd think. And you'd be wrong. The deals appear to be equal, but in fact, they are different. Here's the math: Let's say the standard coffee is 10 yuan and let's divide the amount of coffee into three portions . That makes about 3.3 yuan per portion, The first deal gets you 4 portions for 10 yuan (2.5 yuan per portion) and the second gets you 3 portions of coffee for 6.6 yuan (2.2 yuan per portion) and is therefore a better deal. In a new study published by the Journal of Marketing, participants were asked the same question, and most of them chose the first deal, the Atlantic website reported. Why? Because getting something extra for free feels better than getting the same for less. The applications of this view into consumer psychology are huge. Instead of offering direct discounts, shops offer larger sizes or free samples. According to the study, the reason why these marketing tricks work is that consumers don't really know how much anything should cost, so we rely on parts of our brains that aren't strictly quantitative. There are some traps we should be aware of when shopping. First of all, we are heavily influenced by the first number. Suppose you are shopping in Hong Kong. You walk into Hermes, and you see a 100,000 yuan bag. "That's crazy." You shake your head and leave. The next shop is Gucci, a handbag here costs 25,000 yuan. The price is still high, but compared to the 100,000 yuan price tag you just committed to your memory, this is a steal. Stores often use the price difference to set consumers' expectation. zxxk Another trap we often fall to Is that we are not really... According to the passage, shops use the following tricks to make more profits EXCEPT _ A) showing price differences B) offering larger sizes C) providing free samples D) giving direct discounts
D