【文章內(nèi)容簡介】 has the highest number of road accident deaths in the world. According to the World Health Organisation, over 200,000 people are killed by road accidents. The use of optical illusions as speed breakers was first pioneered in the American city of Philadelphia in 2021, as part of a campaign against speeding motorists. The technique has also been tried out in China to create floating 3D crossings. In India, cities such as Ahmedabad and Chennai have already experimented with 3D zebra crossings in the last one year. In Ahmedabad for instance, a mother and her daughter, both artists, have painted 3D crosswalks in the first few months of 2021. The artists say their motto is to increase the attention of drivers, and that the concept has been successfully tested in accidentprone zones on a highway. However, critics argue that once drivers know that these speed breakers are visual illusions, they may ignore them. Others also point out that India39。s decision does not consider the safety of a large number of pedestrians. In the end, the new policy may be just one step towards improving road safety. 28. Why are 3D paintings used on main highways and roads? A. To make the surroundings more beautiful. B. To attract the attention of tourists. C. To reduce the rate of traffic accidents. D. To show the advanced technology. 29. Which of the following words is closest to the meaning of “hazard” in paragraph 2? A. Reminder 30. What can we learn from Paragraph 3 and 4? A. The use of optical illusions as speed breakers is controversial in India. B. Philadelphia is the second place to use virtual speed breakers in the US. C. The idea tested in Ahmedabad recently has been a failure. D. The new policy of 3D zebra crossings must be carried out. 31. What do we know about 3D zebra crossings from the text? A. They can immediately lower the death rate. B. They have been widely used in India so far. C. They are designed to increase drivers’ attention. D. They are weled by both drivers and pedestrians. D The “swimwithdolphins” tourist industry is being more popular every year with the increase of people’s ine. After all, it can cost a large amount of money to have this kind of holiday experience. So tour operators try to place eager swimmers as near as possible to the dolphins by trying to predict where the dolphins will be. Research has shown that while dolphins can move away if they do not want to interact (交流） with human swimmers, they do not like it at all if the swimmers slip into the water directly on top of them or if humans are in their path of travel. However, if swimmers enter the water to one side of them, the dolphins do not avoid the swimmers to the same extent. In all cases, the dolphins seem to have bee more sensitive to the presence of the swimmers. For dolphins, swimming amongst or with humans is not necessarily a high priority. This research has shown that only 19% of any group of dolphins will participate in interaction. Young dolphins are the most likely to interact。 they do seem curious about being with humans. It is believed that they see humans as “entertainment” and that the interaction is a new and unusual experience for them. It is frequently asked whether “swimwithdolphins” tourism should be discontinued. The advice is that dolphins should be given enough periods of time throughout the day when they are not exposed to tourism. Permitted interactions should not be too disturbing to the dolphins since there could be mothers and calves (幼崽） present in dolphin groups. There should also be educational campaigns about the creatures and what is likely to cause danger to them. It is not easy to explain to someone that they cannot fulfill their lifelong dreams because the dolphins are resting, or that a mother dolphin and calf are in the area. But if we are to enjoy these remarkable animals and not just use them for our entertainment, then we must carefully monitor the “swimwithdolphins” industry worldwide. 32. What makes “swimwithdolphins” tourism popular? A. The local government’s encouragement. B. The improvement of people’s living standard. C. The increasing number of tourists. D. The high profits of the industry. 33. Why are young dolphins more likely to swim with humans? A. They do this out of curiosity. B. They like humans better. C. They are less sensitive. D. They prefer new things by nature. 34. What does the author suggest the “swimwithdolphins” industry do