Read the following article and select the best answer. Article: The largest-ever chariot pit of relics with carts and horse bones has been discovered in Henan Province. It may lead to the uncovering of chariot pit groups that could be a key to understanding Chinese civilizations that existed more than 2,000 years ago. Experts said the relics are dated more than 300 years earlier than the famous warriors in Shaanxi Province. What excited the experts were two other projects that located two huge pits with similar features. "It is absolutely a miracle. These relics indicate that there could be a tomb group in this area, which is likely to be important for China's archaeological studies," said Ma Juncai, a leading relic researcher in the province. In ancient China, carts, sheep, spoons and so on were buried to ensure that dead people had a happy afterlife. The number and quality of the sacrifices indicated the social status of the dead. The custom was carried into the Qin Dynasty. Emperor Qinshihuang's tomb, located near Xi'an, the capital of Shaanxi Province, is accompanied by thousands of wood or clay figures of warriors and horses. The tomb is probably the most well-known. The discovered pit measures 10.4 meters long, 8.4 meters wide and 5 meters deep. It holds 20 carts in different sizes. The smallest one is 1.05 meters long and 1.3 meters wide. Experts think that 40 horses are likely to be found as well. Careful plans need to be made to deal with the demanding uncovering. "The clay is very weak and a small misstep can destroy the whole project. That's why we need to take every step very carefully to protect these cherished cultural relics," Ma said. Question: Careful plans for the uncovering are needed because _ . - another 40 horses are likely to be found as well - the whole uncovering could be destroyed easily - experts are too busy to spare time for it - the government hasn't agreed to it
the whole uncovering could be destroyed easily

Read the following article and select the best answer. Article: Last year I lived in Chile for half a year as an exchange student with the American Field Service. Compared to most visitors, I didn't travel much. I lived with a Chilean family and had the responsibilities of any Chilean teenager. I went to school every day, in uniform. I had good days and bad days and days that I didn't understand. Chuquicamata, my host community, is a mining camp in the Atacama Desert. There is no disco, no shopping center, no museum or beach. Driveways must be watered daily to keep the dust down. When I arrived here, I was scared. It was so different from the urban middle-class America I was accustomed to. There were lost dogs on the streets, and a constant cloud of brick-colored dust came from the mine. There was no downtown, few smoothly paved streets, and little to do for amusement. The people worked extremely hard. Rain was a rare phenomenon; earthquakes and windstorms were frequent. I had studied Spanish for two and a half years and was always one of the best students in my class. But in my first week in Chile I was barely able to communicate and desperate for one person to whom I could explain my shock. I couldn't speak the thoughts in my head --- and there were so many. Most exchange students experience this like me. Culture shock presents itself in everything from increased aggression toward the people to lack of appetite or weight gain and depression. I was required to overcome all difficulties. Being an exchange student is not easy. As time passed, everything changed. I began to forget words in English and to dream in Spanish and love Chilean food. I got used to not depending on expensive things for fun. Fun in Chuquicamata was being with people. And I took math, physics, chemistry, biology, Spanish, art, and philosophy --- for which I received half a credit in global studies. Somehow my high school couldn't figure out a way to relate my experience to its curriculum. But the sacrifices were nothing compared to the gain. I learned how to accept as well as to succeed in another... Question: On arriving in Chile, the author felt frightened because _ . - he couldn't get used to working so hard as Chileans did - he did not know how to get along with local people because of the culture gap - its living conditions were much worse than what he was familiar with - his life was threatened by earthquakes and windstorms
its living conditions were much worse than what he was familiar with

Read the following article and select the best answer. Article: I was born in Brooklyn. My father was a small-business man and we never had much money. He supported the family, moved us to Merrick on Long Island, when I was 11. He just recently died at age 96. He was still driving and playing golf right to the end. He was the only guy I knew who at age 90 could shoot under his age. I guess that taught me something about perseverance. I went to the University of Michigan as an engineering student in 1960. I was standing outside the student union building when Senator John F. Kennedy made a campaign speech that essentially announced his plan for the Peace Corps. He talked about how students could provide service for the country. It was an important moment for me. After I graduated, I worked as a computer programmer for I.B.M. for two years. By then, the Vietnam War was in full swing and the draft had accelerated. I didn't agree with the war and was interested in finding alternatives. I.B.M. applied for a delay for me twice but the application failed. I went to work at M.I.T.'s Instrumentation Labs on a project designed to create a rescue vehicle for lost submarines . I thought this job would keep me out of the draft, but M.I.T. hadn't put in the proper paperwork and I got called in for my physical. The day before my physical, I broke my ankle playing tennis and, of course, my draft board didn't believe a word of it. I had to provide X-rays. I had tears in my eyes from the pain, but a smile on my face. I started John Snow Inc. in 1978 (Dr. Snow is considered the father of modern epidemiology because he traced the source of a cholera epidemic in the 1850s). We had a very clear vision of what we would be. It would not be about making the most money but having the most impact. My goal was to attract talented people who had that passion to focus on primary care, women's health, child health, and to do great work. I also run a nonprofit called World Education, which focuses on literacy. What motivates me is going to the field, either in the United States or overseas, and... Question: What kept the author trying to achieve his goal? - His father's good health when he lived to be over 90. - His poor family. - His father's keeping living an active life to the end. - Kennedy's speech about his plan for the Peace Corps.
His father's keeping living an active life to the end.