阅读理解。 News 1 Yuan Longping,the father of hybrid rice (杂交水稻), won the World Food Prize on Monday. Yuan developed the world's first popular and widely known hybrid rice. Hybrid rice plants can make more rice than common ones. News 2 Liu Xiang won China's first gold medal in the world championships (锦标赛) in 12. 95 seconds. 'Everybody wants to wm a world title. I was nervous before the race. But I dealt with it so I'm very happy,' Liu said with a smile after the race. Some reporters noticed that at the start, Liu Xiang was crying. He said that is his way of letting off pressure. 'My start wasn't good, maybe because I was nervous or because I was a bit slow,' he said. Liu will run next at the Shanghai Grand Prix (大奖赛) meeting at the end of September. He is confident (自信的) after winning the gold medal. 'I want people to know how fast I am,' he said. 'This is number one speed. There's nothing I can't do.' News 3 Have you ever got angry at books that are full of mistakes? Don't worry, things will get better soon. Last week, China started checking textbooks, dictionaries and children' s books all over the country. The government said the results of the check would come out at the end of J une. News 4 Last Wednesday Medvedev (梅德韦杰夫) took over from Vladimir Putin (普京). At the age of 42, he becomes the youngest president of modern Russia. Medvedev was born to a family of teachers. He read a lot from a young age. After university, the soft-spoken young man went on to teach law at university and became very popular with his students. In 2005, Medvedev became the first deputy prime minister (第一副总理). But he was as friendly as before. 'He has not changed. He invited me to his home,' said Vera Smirnova, Medvedev's first teacher. 'In Russia, only two politicians (政治家) have invited their first teachers to their homes, Medvedev and Putin.' 1. Yuan Longping won the World Food Prize because he  _____. [     ] A. was the father of his children B. liked to eat hybrid rice C. developed hybrid rice D. spent a long time to research hybrid rice 2. Why was Liu Xiang crying at the start? [     ] A It's his way to reduce pressure. B. He was nervous. C. He was a bit slow. D. He was excited. 3. What Medvedev's first teacher said shows _____. [     ] A. Medvedev is as friendly as before B. Medvedev and Putin were her students C. Medvedev has changed D. Medvedev and Putin invited her to their homes