I come from a city on the United States'east coast. It's a ten-hour flight for me to get home from Shanghai. When I got off the plane, I took photos of the blue sky and white clouds along the way. After two weeks, I returned to Shanghai. Much to my surprise, the blue sky in Shanghai that I liked before was not as blue as that in the US. I couldn't help wondering what had happened. A few days later, I went to tour Waitan (a famous tourist attraction in Shanghai) by the Huangpu River with some of my friends. There we saw five Ferrari sports cars by the side of the road. The red and yellow cars looked so nice that everyone was looking at them. However, when I turned my head, I noticed the sky over Waitan, I was shocked to find that the buildings in the Lujiazui area on the other side of Huangpu River could hardly be seen. It was then that I realized that Ferrari cars could be bought with money, but a blue sky couldn't. Shanghai is an important economic   and trade center in China. It has made great contributions   to the whole nation's economic development. However, we need to protect the environment during economic growth. Pollution is poisoning our air and our rivers. Without clean air and rivers, how will people be able to survive? What can we learn about the author? A) He comes from Shanghai. B) He likes to visit different places. C) He wants to buy a Ferrari sports car. D) He is socially responsible  .
D

A student and his teacher were walking through the forest. The student was disturbed  by the fact that his mind was in constant unrest . He asked his teacher, "Why most people's minds are restless, and only a few have a calm mind? What can one do to still the mind ?" The teacher looked at him, smiled and said, "I will tell you a story. An elephant was standing and picking leaves from a tree. A small fly came, flying and buzzing near his ear. The elephant waved it away with his long ears. Then the fly came again, and the elephant waved it away _ ". This was repeated several times. Then the elephant asked the fly, "Why are you so restless and noisy? Why can't you stay for a while in one place?" The fly answered, "I am attracted to whatever I see, hear or smell. My five senses pull me constantly in all directions and I cannot resist them. What is your secret? How can you stay so calm and still?" The elephant stopped eating and said, "My five senses do not rule my attention. Whatever I do, I get immersed  in it. Now that I am eating, I am completely immersed in eating. In this way I can enjoy my food and chew it better. I rule and control my attention, and not the other way around." The student's eyes opened wide and smile rose on his face. "I understand! If my five senses are in control of my mind and attention, then my mind is in constant unrest. If I am in charge of my five senses and attention, then my mind becomes calm". "Yes, that's right", answered the teacher, "The mind is restless and goes wherever the attention is. Control your attention, and you control your mind". The reason why the elephant stayed calm and still was that   _  . A) it didn't have a sense of direction B) it was too heavy to move around like the fly C) it paid much attention to things around it D) it concentrated   on what it was doing
D

Most students, when asked about their ideal graduation gift, would probably reply, "A car", or "Money for a deposit on a house". Cai Kaiyuan, 21, made a different choice. As a graduation gift to himself, he decided to work as a volunteer teacher in a remote village in Tibet. Cai, a senior majoring in electrical engineering at Huan Railway Professional Technology College, originally planned to cycle from Sichuan to Tibet. During his journey, Cai's idea for a different graduation gift to himself began to take shape. "I did not know beforehand what the journey would mean to me. I just want to gain a unique experience and have pleasure in appreciating the view there," he said. It turned out cycling on a plateau was extremely challenging. And it has kept changing his outlook on life. Cai's fingers even became frostbitten while cycling up a 5008-meter-high mountain, where temperatures often dropped to 18 below zero. At night, the ice covered the road and he fell off his bike three times. The lack of oxygen made him feel dizzy and weak. "At the most serious moment, I felt that my life was _ ," said Cai. However, he also gained something unexpected. At Ya'an, a city in Sichuan, he met a group of tourists who are also university students. A girl called Wu Ling told him that she planned to work as a teacher in a primary school in Tibet after her journey. He was impressed by the idea as she looked slender and weak. It was not until he reached a family-run hotel in Shigatse that Cai's spirits began to rise. The hotel manager's two daughters enjoyed talking with him. The kids asked about his experiences on his trip, and showed him the beautiful local lakes. "They told me that they always liked to talk to guests, as they wanted to improve their Mandarin," he said, "Their parents and many locals can only speak Tibetan." Cai was touched by the girls' story. Their situation is tough and the local people have little chance to learn Mandarin because the schools are short of teachers. "I want to do something to improve the... The purpose of writing this passage is to   _  . A) tell us about an unusual graduation gift B) introduce a dangerous journey to us C) give advice on how to travel to Tibet D) encourage us to be a teacher in Tibet

A