阅读理解。 Expo 2010 is held in Shanghai from May 1to October 31.People all over the world are looking forward to it. Here are several golden rules on how to best plan your trip. Rule 1: Do your homework Read everything you can before going. Really study the maps. Know the pavilions. Arrive at the entrance nearest to the things you want to see. Have a plan. It will make a big difference. Rule 2: Allow plenty of time Expo 2010 is the largest attraction event in the history of the world. It will take many days too see it. Plan to spend from five to eight days of more seeing it. Rule 3: Pace yourself Expo is enormous.The distances are punishing. It is better to spend a day seeing a single area than to run back and forth all over the site. Remember to wear the most comfortable shoes. Never mind what they look like. Rule 4: Get going in May At many Expos the crowds are smaller in May and in early June than any other time. And beware the last two weeks. During every Expo, people delay their visits and then in early October they suddenly realize. 'Expo will close soon! I haven't seen it!' As a result, the last several weeks usually have the most crowed days of the entire Expo. Rule 5: Find out what everyone else is doing - and do the opposite. If you don't like large crowds and long lines, do the opposite. Here is an example: Most people go on Saturdays or on holidays. So avoid Saturdays and holidays. Go on weekdays when most people are at work. Rule 6: Turn up Expo 2010 is the largest celebration in China's history-am amazing once -in-a-lifetime event. When it is gone and it will never be seen again. So whatever you do, don't miss it! 1. Expo 2010 will last _____. [     ] A. five to eight days B. several weeks C. six months D. a year 2. According to Rule 4, you'd better not go to Expo on _____. [     ] A. May 3 B. July 5 C. September 16 D. October 20 3. When there are lots of people waiting in line to see the most popular attractions, what's your best choice? [     ] A. I'll wait in line as other people do. B. I'll go back and return tomorrow. C. I'll visit the less crowded places instead. D. I'll sit on a bench to have a rest for about two or three hours. 4. In Rule 6 'turn up' here means _____. [     ] A. don't miss it B. come and see C. make the sound louder D. never be seen again