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Read the following article and select the best answer. Article: Cars are the most important part of life in the United States. Without a car most people feel that they are poor. And even if a person is poor he doesn't feel really poor when he has a car. Henry Ford was the man who first started making cars in large numbers. He probably doesn't know how much the car was going to affect American culture. The car made the United States a nation on wheels. And it helped to make the United States what it is today. There are many reasons that the car became so popular in the United States. First of all, the country was a large one and Americans like to move around in it. The car provides the most comfortable and cheapest from of transportation. With a car people can go to any place without spending a lot of money. The second reason that cars are popular is the fact that the United States never really developed an efficient and inexpensive form of public transportation. Long distance trains have never been as common in the United States as they are in the other parts of the world. Nowadays there is good system of air service provided by planes. But it is too expensive to be used frequently. The third reason is the most important one. The American spirit of independence is what really made cars popular. Americans don't like to wait for a bus, or a train or even a plane. They don't like to have to follow an exact schedule. A car gives them the freedom to plan their own time. And this is the freedom that Americans want most to have. The gas shortage has caused a big problem for Americans. But the answer will not be a bigger system of public transportation. The real solution will have to be a new kind of car, one that does not use so much gas. Question: "a nation on wheels" means _ - the nation is producing the best cars in the world - everyone in this country owns a car - cars play a very important role in people's life - there are more cars than trains in the country
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cars play a very important role in people's life

(Q).
Read the following article and select the best answer. Article: Researchers believe that the insect is better at managing congestion than humans. Ants are the most many type of animal on earth with brains that contain about 250,000 cells ---- the largest among insects. Now an intelligence expert Dr. Dirk Helbing says understanding more about ants could help solve one of the headaches of modern life -- road congestion. His team set up an "ant motorway" with two routes of different widths from the nest to some sugar syrup . Soon the narrower route soon became crowded . But when an ant returning along the crowded route to the nest met with another ant just starting out, the returning ant pushed the newcomer onto the other path. However, if the returning ant had enjoyed a trouble-free journey, it did not send the newcomer in a different direction. The result was that just before one route became _ , the ants had turned to another route and traffic jams never formed. The researchers also created a computer model of more complex ant networks with routes of different lengths. The team found that even though ants being sent in another direction sometimes took a longer route, they still got to the food quickly and efficiently. Dr. Helbing, of the Dresden University of Technology in Germany, said that while you cannot allow cars to meet with traffic coming in the opposite direction as a form of traffic control, you could do the next best thing and allow them to communicate. His plan is to force cars traveling in one direction to tell oncoming traffic what the conditions they are about to meet with-- so they can avoid that situation if necessary. Question: If an ant returns along crowded route to the nest, how does the ant solve the traffic problem? - The ant will change the direction of its own. - The ant stopped the newcomer from moving ahead and forced the newcomer to wait there patiently. - The ant can't direct the newcomer. - The ant will push the newcomer to the other route, so traffic jams won't form.
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The ant will push the newcomer to the other route, so traffic jams won't form.

(Q).
Read the following article and select the best answer. Article: Thanksgiving time came and all the relatives were gathered around the long table, or seated behind TV trays.The television was on and some folks were watching it while talking with one another.Something on television got their attention and one of the adults said, "Listen at it!" Someone else replied."Well, if that don't beat all." Simple phrases were spoken by folks whose language was simple and brief.They had several idioms that were just as colorful phrases and words that brightened the room and warmed the conversation.In school we were taught to speak differently.The way our relatives spoke was discouraged.Sometimes our parents would say things we weren't taught in school.They'd often correct themselves, as if getting rid of a mistake.Of course we learned some of their phrases and used them.They were comfortable words to pronounce, familiar. Our father's side of the family was from Arkansas and Oklahoma and they spoke with the accents native to their birth states.Their voices musical and often high , it was easy to pick up that effect in our own speech and at school my brother and I were often teased for the way we spoke.Our mother's side of the family came from Illinois and they had a tendency to talk fast.They had an accent, too, and my brother and I added that to our own speech, confusing the kids at school all the more.Our father's side of the family loved to laugh and have a good time.Our mother's side of the family was more serious about how they took life in; their joys more silently experienced and enjoyed.It was a rich picture of culture and it gave my brother and me a colorful view in life. Thanksgiving holiday was always an easy comfortable going day.It was the first real holiday of the season when everyone came together in one place, and a good time was spent happily together by all. Question: From the text we can know that _ . - parents were worried that their relatives might affect their kids' language - parents tried to avoid affecting their kids with their dialects - parents didn't allow their children to speak dialects - parents thought the language taught in school was the best
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parents tried to avoid affecting their kids with their dialects