阅读理解。 The Yanhuang Travel Agency will organize(组织) a travel to Mount Yunwu on Labor Day. Mount Yunwu is a very beautiful mountain with a clean river nearby. It is near the Great Wall and it's only 80 kilometers away from the city center. If you are interested in it,read this information carefully , please. Time Labor Day Activities Climb the mountain and the Great Wall; swim in the river; pick up fresh fruit. Quota(名额) 40 adults only. Transportation. Go there by bus and come back by train. Phone 62385164 between 8 :00 a. m. and 6 :00 p. m. Price 450 yuan altogether, but if you sign up (报名) before next Tuesday you can have 30 percent off. We will set out at 6:30 a. m. on LaborDay. Please contact(联系) our travel agency in time. 1. Which of the following is NOT true according to the above information? A. Mount Yunwu isn't far from the Great Wall. B. You can swim in the river that is next to Mount Yunwu. C. You can go on the trip with your children. D. The work time of the travel agency must be 10 hours a day. 2. How will the travelers come back from Mount Yunwu? A. By bus. B. By car. C. By bike. D. By train. 3. What time will the travelers set out to Mount Yunwu? A. At 6:00 a. m. B. At 6:30 a. m. C. At 8:00 a. m. D. At 6:00 p. m. 4. If you sign up this Sunday,how much should you pay for a person? A. 450 yuan. B. 350 yuan. C. 315 yuan. D. 300 yuan.