阅读理解。 Du Fu, the famous Tang Dynasty poet, is getting the business these days. In response to the 1,300th anniversary of the poet's birth, the meme, 'Du Fu is busy,' is spreading through the Internet and turning the iconic poet into a figure of fun. A meme is a cultural phenomenon. It's an idea or image that somehow strikes a chord with Internet users and prompts them to comment on it, change it, or use it in different situations. In Du's case, the meme is a picture of the poet taken from a textbook. The picture shows a very serious Du sitting on a rock, clothed in loose robes. His chin is pointed resolutely upward and his eyes gaze calmly into the distance. It is a picture of a man with a great mind and a heroic spirit. That image is changed in the meme. Du Fu is now seen holding a gun or listening to an iPod or dressed as a Japanese cartoon character. In today's world, it seems fewer people respect great minds or heroic spirits. This is sad because it means we are losing our sense of idealism. Du Fu led a life of poverty and humiliation. I visited his thatched cottage in Chengdu and imagined the hardship he endured: the loneliness, the cold, and the hunger. Yet, hardship didn't kill his spirit, and his great poetry reflects his inner strength. Internet users may find that giving Du Fu the business is entertaining, but it cannot diminish his greatness. And that enduring image of greatness is the one that truly matters. 1. which expression can be used to replace the underlined part in Para. 1? A. getting along very well with his business B. getting busier and busier C. becoming a successful businessman D. being made to look foolish 2. Which of the following pictures is mentioned in the passage? A.                  B.               C.               D. 3. What's the author's attitude towards the meme, 'Du Fu is busy'? A. Positive. B. Critical. C. Doubtful. D. Neutral. 4. What's the main idea of the passage? A. Meme is more and more popular. B. Du Fu is no longer a famous poet. C. Du Fu is getting the business. D. Du Fu has become a new hero.